Tag Archives: Center for Whale Research

Ken Balcomb offers his personal observations about J-32’s death

UPDATE, DEC. 17, 2014
A news release sent out yesterday by the Canadian Department of Fisheries and Oceans confirms what Ken Balcomb suspected when I interviewed him on the day the necropsy was performed. See also Associated Press story by reporter Phuong Le.
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Ken Balcomb of the Center for Whale Research has written an excellent report about the recent death of J-32, the Southern Resident orca that died with an unborn and decomposing offspring inside her.

J-32 awaiting necropsy on Bates Beach near Courtenay, B.C. Photo courtesy of Center for Whale Research
J-32 was taken to Bates Beach near Courtenay, B.C., for the necropsy conducted Saturday.
Photo courtesy of Center for Whale Research

Ken’s report talks not only about his observations of the necropsy, which I reported in Water Ways on Saturday, but it also includes his observations as he watched the young whale grow up:

“The decade around the millennium was a difficult time for the J10 matriline – J32’s mom (J20) died at the age of seventeen in 1998 when J32 was only two years old; her grandmother (J10), who took over her care, died at the age of thirty-seven in 1999, when J32 was only three years old; and her uncle (J18) died at the age of 23 in 2000. All died young relative to the average lifespan of 50+ for females and 29 for males in this species.

“Fortunately, auntie J22 at age thirteen gave birth to a baby (J34) in 1998, and provided orphaned J32 the required nurturing of a ‘mom’. With that nurturing from grandmother and auntie, including perhaps a little milk, J32 made it through her infancy and into her teens to be a very vivacious young whale, full of energy.”

Ken writes eloquently about his concerns regarding the high levels of toxic contaminants carried in the blubber of the Southern Resident orcas. The contaminants are known to cause problems with the immune and reproductive systems. They also can cause brain deficits that can lead to behavior disorders. He writes:

“These pollutants are released to circulate in the bloodstream when the whales’ blubber fats are metabolized for energy when fresh food is scarce. It is like having a freezer full of tainted and freezer-burned food that you never have to eat unless there is nothing in the grocery store. When nothing else is available the bad stuff is taken out of storage and circulated for body needs.”

Ken also repeats his plea for people to take action in the face of ongoing disaster for the local killer whale population — including this sudden death of a young mother known as Rhapsody and her unborn offspring.

“This is a very ugly situation for the population of Southern Resident killer whales – our beloved orca. I think we must restore abundant healthy prey resources ASAP if these whales are to have any chance of avoiding extinction. The critical point for their recovery may already have passed. I hope not, but it will soon pass if we do not take immediate action.”

Ken’s full report is well worth reading. It can be found on the website of the Center for Whale Research or you can download the title, “Preliminary Necropsy Report for J32” by Kenneth Balcomb, Center for Whale Research.

Killer whale, age 18, was pregnant when she died

One of the last photos taken of J-32, Rhapsody, shown here in the lead at right. The picture was taken in Speiden Channel on Nov. 29, five days before she was found dead. Photo courtesy of Melisa Pinnow, via Orca Network
One of the last photos taken of J-32, Rhapsody, shown here in the lead at right. This picture was taken in Spieden Channel, San Juan Islands, on Nov. 29, five days before the female orca was found dead.
Photo courtesy of Melisa Pinnow, via Orca Network

Like many people, I was shocked and saddened by the death of J-32, an 18-year-old female orca who had offered an avenue of hope for the recovery of the endangered killer whale population in Puget Sound.

We now know from yesterday’s necropsy, that Rhapsody, as she is called, was pregnant at the time of her death.

“Yes, she was pregnant, near-term, 80 percent or plus,” Ken Balcomb told me last light after participating in the examination of the body near Courtenay, B.C.

The actual cause of death is not yet certain, but it is likely that the fetus died in the uterus, resulting in a necrotic condition that eventually broke down the mother’s tissues, according to Ken, founder of the Center for Whale Research. There were no signs of trauma that would suggest injury of any kind, he added.

Dr. Stephen Raverty, a veterinary pathologist in charge of the necropsy, removed J-32’s uterus with the intact fetus inside. Dr. Rafferty told me that he plans to take images of the fetus in utero tomorrow before continuing the examination. He said he would be unable to provide any information until he receives approval from his client, the Canadian Department of Fisheries and Oceans.

As in other post-mortem examinations of killer whales, experts will examine tissues, blood and body fluids in multiple ways to gauge the general health of the animal as well as the cause of death. The Southern Resident pods — J, K and L — are known to carry some of the highest loads of toxic chemicals of any marine mammals in the world. The whales may also undergo nutritional stress because of a shortage of their primary prey, chinook salmon.

The last sighting of the animal was Nov. 29. Her body was found floating near Courtenay on Thursday, Dec. 4. She was a “remarkably small” killer whale, about 15 feet long, Ken said. Females normally grow to between 16 and 23 feet.

Rhapsody was born in 1996. Her mother, J-20 or Ewok, died when she was 2 years old. The young whale was then raised by her Aunt, J-22 or Oreo. Rhapsody is survived by her aunt and two cousins. (See Orca Network’s news release about the death.)

At age 18, she was at the beginning of her reproductive life, with a potential to add several babies to the dwindling population of Southern Residents, now at 77 animals. J pod is down to 24 orcas, with only a few reproductive females at this time.

Ken Balcomb said he hopes Saturday’s necropsy will reveal whether J-32 had ever been pregnant before, since killer whales typically become fertile around age 12 and often give birth by age 15. Her mother was 13 when she was born, Ken noted.

When the ovaries expel an egg, it leaves a little white scar tissue behind. If the egg is fertilized and grows, the scar tissue is notably larger, Ken explained.

An average female gives birth every five years, Ken said. That rate should be adding three or four calves to the Southern Resident population each year.

“Three years ago, I predicted that they should be having 19 babies by now,” Ken said.

Instead, the population is declining, with no surviving calves born last year or this year. A baby born to L-86 in September of this year was reporting missing a little more than a month later.

Rhapsody was the third adult to die this year. Also missing and presumed dead are L-53, a 37-year-old female known as Lulu, and L-100, a 13-year-old male known as Indigo.

Howard Garrett and Susan Berta of Orca Network may have spoken for many of us with this comment: “We cannot express how tragic this loss is for this struggling, precariously small, family of resident orcas of the Salish Sea.”

Hope of seeing larger orca population dashed by calf’s death

A seven-week-old baby orca born to our Southern Resident pods was reported missing and presumed dead today. This was the newborn orca who brought so much hope and excitement to our area, being the first reported birth in more than two years.

The baby orca, L-120, with its mother a few weeks ago while still alive. The calf is reported missing and presumed dead. Photo courtesy of Carrie Sapp.
The baby orca, L-120, with its mother a few weeks ago while still alive. // Photo courtesy of Carrie Sapp.

When I called Ken Balcomb this morning, he was in a “subjective” state of mind, as he put it. Ken, of the Center for Whale Research, has been keeping track of the three Southern Resident pods since 1976, and he’s clearly worried that these whales may be headed for extinction.

As we talked on the phone, Ken was peering through the large windows of his home on San Juan Island and watching a large purse seine vessel scooping up chum salmon and possibly other species as bycatch.

“I look at this every day, and I’ve seen this for almost 40 years,” Ken said. “There is no letup on the human part. Virtually no fish are getting past the outlet. We know the Fraser River runs are in poor shape, and our management doesn’t seem to take any kind of ecosystem approach.”

Salmon biologists set the sport and commercial fishing seasons based on an estimate of the number of fish returning. They update that estimate during the season based on harvest numbers caught in the nets.

“Whatever they are doing, it obviously has not worked, since we’ve seen run after run not doing well,” Ken said. “I get subjective about it and wonder when our society is going to do something to get more prey (for the whales).”

Ken said there was much hope for the seven-week-old orca, designated L-120, the third known offspring of the 23-year-old mother designated L-86.

“I was optimistic,” he told me. “When we first saw the baby, it had a squished-looking head, but even human babies can be born with a flattened head.

“Within a week, it was filling out well and was energetic,” he continued, and there was no reason to believe the calf would die.

The Southern Residents are known to bear a heavy burden of toxic chemicals, but transient killer whales are even more contaminated. The difference may be that transients, which eat marine mammals, may be getting enough food. Was the orca mom unable to nurse her baby? Did the toxic chemicals cause an immune deficiency? Or was there another problem? We’ll probably never know.

All three orca pods were probably out in the ocean when the youngster disappeared. The mom was seen with other whales on Friday, Saturday and Sunday without the calf — something that would not happen if the baby were alive.

L-120 was the third calf born to L-86. Her second calf, L-112, washed up dead at Long Beach in February 2010. After much investigation, researchers concluded that L-112 had died of blunt force trauma, but what caused the injury was never determined. Ken suspects some kind of explosive detonation, although that cause was discounted by investigators.

Howard Garrett of Orca Network said the orcas have faced a shortage of food, toxic chemicals, routine shooting with guns and a series of captures that depleted the population.

“We haven’t treated these magnificent orcas well at all,” Howie said in a news release. “As a society we are not successfully restoring this orca community, despite the many warnings and legal declarations.

“Our challenge is clear: Bountiful salmon runs must be restored and protected or we won’t see resident orcas in the Salish Sea in coming years,” he added.

The latest population count places the total number at 78, the lowest number since 1986, according to records by the Center of Whale Research.

Unprecedented sighting of newborn minke whale

UPDATE, MAY 12, 2014

In talking to Jon Stern of the Northeast Pacific Minke Whale project, I learned that the pictured minke calf does not appear to be a newborn after all. The young animal probably was born in January, the normal birthing time for minkes, and it is likely to be weened and learning from its mother how to hunt for food.

As far as I can tell, the other information below is accurate.

“The larger whale is a whale we’ve seen since 2005,” Jon told me. “We named the whale ‘Joan’ for Joni Mitchell.”

The first time the research team spotted this whale, it was swimming in circles, Jon explained. Jon started singing Mitchell’s “The Circle Game” (“And the seasons they go round and round …”). And the name “Joan” stuck.

The female has been seen with other calves, which are normally about 9 feet long when born and about 14 feet when weened at four or five months.

Seeing the whale with another young calf is a good sign that new individuals are being added to the Puget Sound population, which may now total more than 20 animals, Jon said.

Minke whales are faster than other whales and still the most mysterious whales seen in Puget Sound, he confirmed, adding, “The coolest whales are the minke whales.”
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A once-in-a-lifetime sighting of a newborn minke whale, accompanied by its mother, was reported last weekend near San Juan Island.

Shane Aggergaard of Island Adventures Whale Watching had this to say about it:

Photo: Brooke McKinley, Island Adventures
A newborn minke whale swims with its mother near Heins Bank in the San Juan Islands on Saturday. (Click to enlarge.)
Photo courtesy of Brooke McKinley, Island Adventures Whale Watching

“I’ve been working these waters for over three decades now, and I talked to Ron Bates of Five Star Whale Watching and other researchers and skippers who have been here just as long or longer, and we’ve never seen anything like this. We do see minkes a lot, especially this time of year, and we’ve seen juveniles traveling with their mothers, but never a newborn.”

Shane made his comments in a news release issued by Michael Harris of Pacific Whale Watch Association, who noted that minkes are common residents of Puget Sound — but the sighting a newborn in local waters may be unprecedented.

“We’ve been keeping tabs on whales for almost 40 years and we’ve never seen a minke this young out there,” Ken Balcomb of the Center for Whale Research was quoted as saying. “It’s an extremely interesting sighting. Let’s hope it means that the population is growing.”

Island Adventures Captain and Naturalist Brooke McKinley captured the photos on this page and others from the boat Island Adventurer 4. She has shared the pictures with whale researchers in our region. The mom and calf were spotted Saturday afternoon near Hein Bank, about five miles southwest of San Juan Island.

A newborn minke whale swims with its mother near San Juan Island Saturday. Photo courtesy of Brooke McKinley, Island Adventures Whale Watching
Photo: Brooke McKinley, Island Adventures

Michael added his own perspective:

“Thanks to people like Ken Balcomb we know more about our resident killer whales here than any marine mammal population in the world. And yet we know very little about a species that also makes its home out here, the minke.

“It’s probably our most mysterious whale, and now we’ve just been given a rare glimpse of a newborn. The scientists we gave these photos to are kids in a candy store. This is a very special occurrence, and having these amazing images to review may provide a lot of clues to researchers.

“The more we learn about these minke whales, the better equipped we are to protect every creature out there.”

Here’s a description of the minke provided by Harris:

“The minke is a member of the rorqual family of whales (whales with baleen, a dorsal fin, and throat pleats) and spends very little time at the surface. It’s one of the fastest whales in the ocean, capable of speeds up to about 25 miles per hour. its blows are rarely visible and it disappears quickly after exhaling, making it difficult to spot – and to study.

“The minke is one of the smallest of baleen whales, with adults reaching a maximum of just about 33 feet and 10 tons. However, a good look at the minke underwater shows it to be one of the most beautiful of all cetacea, with a slender and streamlined body, dark on top and light-colored at the bottom, with two areas of lighter gray on each side, some with a light-colored chevron mark on their back and a white band on each flipper.

“They are often solitary animals, particularly in the Salish Sea, feeding primarily on krill and small schooling fish like herring.”

Minke whales are among the marine mammals I featured in the ongoing series “Taking the pulse of Puget Sound,” where I reported that at least a half-dozen minkes are believed to inhabit Puget Sound. The number is now believed to be more than 20. For management purposes the local minkes are grouped with a California/Oregon/Washington stock numbering between 500 and 1,000 animals. Nobody knows if the population is growing or declining.

Photo: Brooke McKinley, Island Adventures
Photo: Brooke McKinley, Island Adventures

Orcas still ‘endangered’ as next steps contemplated

Federal biologists have decided, following a yearlong review, that the Southern Resident killer whales should remain listed as “endangered.”

A lot of folks were surprised when the National Marine Fisheries Service agreed to undertake the review, based on a delisting petition from some farmers in California’s Central Valley. As I outlined in a Water Ways post last November, the agency acknowledged that there was new scientific information about the extent to which the Puget Sound whales breed outside their group. Such information could potentially undermine the finding that the Southern Residents are a distinct population segment, a prerequisite for the endangered listing.

After the review, the federal biologists found that most of the new evidence strengthens the position that the Southern Residents — those that frequent Puget Sound — are distinct and unique in other ways essential to the listing. Here’s how I wrote about it in yesterday’s Kitsap Sun (subscription required):

“The endangered listing for the Southern Residents hinges on the legal question of whether the three pods constitute a distinct population segment of an identified species or subspecies. Agency scientists maintain that the Puget Sound whales have their own language and preferred food sources, and they don’t breed to a significant degree with other killer whales. They also meet other requirements for listing, such as having their own range of travel and not interacting with other groups of the same species.

“New evidence, however, shows that their range overlaps that of other orcas to varying degrees and that occasional external breeding takes place. Still, agency scientists conclude, new information about genetics, behavior and cultural diversity demonstrates more convincingly than ever that Southern Residents are unique and irreplaceable.”

To read the official findings, check out the Federal Register notice (PDF 270 kb) and the Status Review Update (1.1 mb).

I would speculate that taking on the yearlong review was one way for agency officials to put the new information into official context, as they see it, before a near-certain court battle ensues.

By the way, the attorney for the farmers, Damien Schiff of Pacific Legal Foundation, told me that he feels the agency sidestepped the very information that compelled it to conduct the status review:

“The decision is disappointing because of the result, but it also seems to contradict the service’s own finding … that it had substantial information that delisting may be warranted.

“They cleverly avoided that by mislabeling our information as consistent with the action they took in 2005. They never really engaged with the new evidence they were presented.”

Myoko Sakashita of the Center for Biological Diversity said her organization will defend the National Marine Fisheries Service’s findings if the case goes to court. The group led the court battle that resulted in the orcas being listed as endangered in the first place.

I asked Myoko if her group intends to push for further protections for the Southern Residents, such as expanding critical habitat into the Pacific Ocean. She confirmed that such action was a strong possibility and may not wait for the agency’s regular five-year review.

Ken Balcomb of the Center for Whale Research said he has presented research findings about the travels of the whales up and down the West Coast, including forays into Northern California. Recent satellite-tracking of the orcas by agency biologists confirms that their habitat should be protected along the coast to give them a better chance of survival, he said. See Water Ways, April 5, 2013.

So far, critical habitat has been designated for most of Puget Sound, but this year provides evidence that they rely on a much greater area. So far this summer, the Southern Residents have been mostly missing from the San Juan Islands, probably because of a serious decline in the chinook salmon runs returning to the Fraser River in British Columbia. This kind of extended summer absence from inland waters has never been witnessed over the past 30 years — and nobody seems to know where the orcas are now.

I asked Ken what he thought about the petition to list Lolita, also known as Tokitae, as “endangered” along with the rest of the Southern Residents, of which she is a member. Ken said he supports the idea, even if it means nothing regarding Lolita’s welfare or future. Having her included in the federally protected population may be the only way to guarantee that researchers can examine her body after she dies, he said. If nothing else, the orca’s tissues could contain information to help future generations of killer whales.

Back to the decision to keep the Southern Residents on the Endangered Species List, here are a few press releases from involved organizations:

National Marine Fisheries Service (PDF 15.1 kb)

Puget Sound Partnership

Center for Biological Diversity

Orca Conservancy (PDF 1.3 mb)

Pacific Whale Watch Association (PDF 565 kb)

Two older female orcas die, affecting L pod

Two of the oldest female orcas in L pod have been reported missing and presumed dead by the Center for Whale Research, which will release its annual census count of the three local orca pods on July 1.

The overall population of the Southern Resident killer whales, which frequent Puget Sound, has dropped to 82 animals, continuing the general decline since the three pods totaled 89 whales in 2005. The current count is barely above the low point of 79 animals in 2001.

One of the missing females is L-2 or “Grace,” estimated to be 53 years old. Since she has no surviving female children, her long line of ancestry will die out with the eventual death of her son, L-88 (“Wave Walker”).

Killer whales, both male and female, generally stay with their mothers for life. In a healthy orca population, each matriline is headed by an older female, along with all her surviving children and grandchildren.

Since L-2 was beyond reproductive age, her matriline reached a dead end with the death of her daughter, L-67 (“Splash”) and L-67’s daughter L-101, (“Aurora”), both in 2008. There were no other females to carry on the line.

L-67’s other offspring was L-98 (“Luna”), who became separated from his family and lived for several years in Nootka Sound along the west coast of Vancouver Island. Movies have been made about Luna and the unsuccessful effort to reunite him with his family. Luna was killed by a tugboat in 2006.

Ken Balcomb, director of the Center for Whale Research, said it has been evident for some time that L-2’s matriline would die out. At least three or four other matrilines in L pod are in a similar condition, which leads Balcomb to believe that the population is likely to continue its decline before it turns around, if that’s possible.

L-2, last seen in December, is survived by a son, L-88 (“Wave Walker”), whose fate is yet to be determined. The 20-year-old was very close to his mother.

“When the mother dies, there is a high probability that the male son will not survive,” Ken told me. “It seems a male needs an older female. I think there is some sort of role in the social structure. Maybe the female keeps track of relationships and who is appropriate for mating. It is all speculation, but L-2 was a container of wisdom.”

Sometimes a male will survive if he is accepted into another group with older females. L-87 (“Onyx”), a 21-year-old male, lost his mother. He began traveling with K pod and later with J pod, which may have kept him going. His sister, L-22 (“Spirit”) and her two sons remain in L pod.

But the number of reproductive females in each pod is really what establishes hope for the future, Ken said.

“That’s why L-112 is such a tragedy,” he noted.

L-112, a 3-year-old female named “Victoria” or “Sooke,” was found dead on Long Beach in February of 2012. An investigation listed the cause as “blunt-force trauma.” The cause of trauma may never be known, according to the latest reports. (It is probably time for me to update the evidence that is available.)

I guess I haven’t said anything about the other female reported missing. She is L-26 (“Baba”), last seen in March and reported as looking emaciated by researchers with the Northwest Fisheries Science Center. L-26, estimated to be 57 years old, has a 20-year-old daughter, L-90 (“Ballena”). We’ll see how L-90 fares over the next few years.

As in all populations, including our own, individuals get old and die. Ken noted that he has been keeping tabs on these whales for nearly 40 years, which means he has grown older with them.

“When we began this study, we didn’t think they would live this long,” Ken told me. “It is sad that lives have ended, but nature marches on.”

Photo courtesy of Capt. Jim Maya
Photo courtesy of Capt. Jim Maya

New L pod calf reported among rare superpod

A new calf was spotted today in L pod. The baby, L119, is the offspring of L77, Matia.
Photo courtesy of Jeanne Hyde via Capt. Jim Maya

UPDATE, June 3

The Center for Whale Research has reported the apparent absence of two additional Southern Resident killer whales as a result of an encounter last Tuesday by center researchers Dave Ellifrit, Erin Heydenreich and Barbara Bender.

In addition to L-112, the 3-year-old female found dead near Long Beach in February, and J-30, a 17-year-old male who has not been seen since December, the research team reported that two older females appear to be missing. They are L-5, estimated at 47, and L-12, estimated at 78. (Their ages are estimates, because the annual census that keeps track of every birth and death began 36 years ago.)

“We will wait for a couple more good encounters with L pod before writing them off to make sure they were not just missed,” the researchers said in their report of the encounter, which also includes 10 photos.

Orca Network has tentatively removed all the missing whales from its list of living orcas, leaving the number of survivors at 85.
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Mystery of orca’s death only deepens with new info

The unusual death of L-112, a young female orca apparently killed by “blunt force trauma,” continues to fuel discussions about what may have killed her and what should be done about it.

Kenneth Hess, a Navy public affairs officer, posted a comment today on the recent blog entry “Balcomb wants to know if young orca was bombed.” In his comment, Hess repeats that the Navy did not conduct any training with sonar, bombs or explosives in the days preceding L-112’s death. He called it “irresponsible and inaccurate” to blame the Navy for “blowing up” the whale.

Another new development today is an e-mail I received from Lt. Diane Larose of the Canadian Navy, responding to my inquiry about any explosive devices used in the days before L-112 was found dead on Feb. 11. Read the e-mail (PDF 16 kb) I received:

“On February 6, 2012 HMCS Ottawa was operating in the Straits of Juan de Fuca, specifically in Constance Bank, conducting Work Ups Training including a period of sonar use and two small under water charges as part of an anti-submarine warfare exercise. These small charges were used to get the ships’ company to react to a potential threat or damage to meet the necessary training requirement.”

In talking to experts involved in the investigation, it seems unlikely that L-112 could have been injured or killed in the Strait of Juan de Fuca and then wash up dead on Long Beach five days later. So the mystery continues.

In tomorrow’s Kitsap Sun, I’m reporting that environmental groups on both sides of the Canadian border are calling on their respective navies to disclose all the specific activities during the 10 days leading up to the discovery of L-112’s carcass at Long Beach on Feb. 11. The groups also are calling for a complete cessation of sonar use for training and testing in the Salish Sea.

Check out three letters submitted to the navies involved, including one from U.S. and Canadian scientists:
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Balcomb wants to know if young orca was bombed

Ken Balcomb, the dean of killer whale research in the Northwest, has looked at the evidence and believes he knows what killed L-112, a 3-year-old female orca found along the Washington Coast in February.

L-112 in happier times. The 3-year-old orca died in February, and her death is the subject of an intense investigation.
Photo by Jeanne Hyde, Whale of a Porpoise
(Click on image to see Jeanne's tribute page)

“Clearly the animal was blown up,” he told Scott Rasmussen, a reporter for the Journal of the San Juan Islands.

When I asked Ken to explain, he provided a lot more detail and informed me that he was calling for a law-enforcement investigation into the whale’s death by the National Marine Fisheries Service. Why he is seeking more than a biological analysis of the death will become clear in a moment.

What Ken is suggesting is that L-112 was killed by a bomb, possibly dropped from an aircraft during a training event in the Navy’s Northwest Training Range off the West Coast. His evidence is circumstantial, but he wants some answers.

What we know for sure is that this young female orca washed up dead at Long Beach on Feb. 11 in relatively fresh condition, allowing a complete necropsy, including CT scans of the head and dissections of the internal organs and head.

Joe Gaydos, a veterinarian with The SeaDoc Society who participated in the necropsy, said the whale showed signs of “blunt force trauma” with injury to the right and left sides of the head and right side of the body. Blunt force trauma might be what a human would experience if dropped from a helicopter onto soft ground, he explained.
Continue reading

Reports of injured killer whale are likely false

I’m happy to inform you that reports of a killer whale being struck off the west side of San Juan Island this morning apparently were false.

Erin Heydenreich, Ken Balcomb and others with the Center for Whale Research spent about two hours on the water this afternoon checking out L-90, a 19-year-old female known as “Ballena.” She was the orca reported to have been struck by a boat going too fast near the whales.

“We got a very good look at her,” Erin noted. “There were no signs of injury or indications that she had been struck.”

She noted that the orca was acting “strange,” including logging at the surface for unusually long times, moving slowly and making brief dives. That may have been one reason that observers believed she had been struck by a boat.

But another explanation for her unusual behavior is that Ballena is pregnant and about to have a calf, she said. That type of behavior has been seen in the past among expectant orca moms.

“She is at that age where she should be having a calf (her first),” she said. “She could be having a difficult pregnancy or something may be wrong with her not related to this vessel thing.”

Erin said officers with the Washington Department of Fish and Wildlife questioned individuals involved with the incident and reported that it was unlikely that any whale was hit.

She said the researchers also checked out J-32, a 15-year-old female that was initially reported in the area. That whale, named “Rhapsody,” also showed no signs of injury.

The Center for Whale Research plans to watch L-90 especially closely the next few days to see if she has a new calf or otherwise changes her behavior.

Craig Bartlett of WDFW confirmed that officers had talked to the occupants of a large pleasure boat that had been moving slowly through the area. They were surprised that anyone believed something was seriously wrong, he said.