Tag Archives: killer whales

Chum fishing closed in San Juans but opens soon elsewhere in P. Sound

Commercial fishing for chum salmon has been called off this year in the San Juan Islands, but that does not necessarily mean low numbers of chum will be returning to Puget Sound, experts say.

It will be interesting this year to see how the southern resident orcas respond to the movements of chum — the whales’ second choice after Chinook salmon. And, as always, chum salmon provide Puget Sound residents the best chance of observing salmon in the wild.

The San Juan closure is mandated under the Pacific Salmon Treaty with Canada whenever the number of chum coming through Johnstone Strait is estimated to be less than 1 million fish. This year marks the first closure since this particular treaty provision was put in place a decade ago.

The estimate of chum abundance, based on test fishing along Vancouver Island’s inside passage, is not a direct indicator of how many chum will make it back to streams in Puget Sound, said Aaron Default, salmon policy analyst with the Washington Department of Fish and Wildlife. Many of the fish in the Johnstone Strait test fishery are headed for Canada’s Fraser River, he noted.

Chum salmon are important to commercial fishers, and this year’s closure in the San Juans could affect the bank accounts of those who had planned to get an early start on the chum fishery, Aaron told me.

“I would say this is a real concern,” Aaron said. “Reef net fishermen, for example, actively fish for chum as well as sockeye and pinks.”

Gillnet and purse seine boats that don’t make the trip to Alaska often get in on the fishing in Areas 7 and 7A of the San Juans, especially in years when the chum runs are strong.

To the south, in Puget Sound and Hood Canal, commercial fishing is scheduled to begin next week — and it won’t be long before the rest of us can visit our local streams to marvel at the annual migration and maybe catch a glimpse of spawning activities.

The year’s first test fishery for chum runs to Central and South Puget Sound was held this week near Kingston. The operation caught 169 chum, compared to a recent 10-year average of 760 chum for the first week, Aaron reported. While that number is low, it won’t be used as an indicator of abundance for at least a couple more weeks, because it could just mean that the run is later than usual, he said.

State and tribal salmon managers predicted a chum run of 444,000 fish this year in Central and South Puget Sound, compared to a 10-year average of about 527,000. Fishing schedules were based on the forecast of 444,000, but fishing times could be adjusted if chum numbers are lower or higher than that.

In Hood Canal, the run size of 518,000 chum is well below the 10-year average of about 750,000. But that 10-year average is a little misleading, because it contains two extraordinary years: 2013 with a return of 1.4 million chum, and 2017 with just over 1 million, Aaron explained. If we exclude those two years, Hood Canal’s fall return this year should be fairly typical.

Nest week’s opening of commercial fishing in Puget Sound and Hood Canal allows nontribal purse seiners to fish on Wednesday and gillnetters to follow on Thursday. Typically, we see a lot of purse seiners lining up south of the Hood Canal bridge for the first day of fishing, and this year should be no exception. For commercial fishing openings, one can check the WDFW Fishing Hotline online, or call (360) 902-2500.

The fishing closure in the San Juan Islands is likely to remain, although salmon managers will reassess conditions on or before Oct. 22, using information from the Albion test fishery near the Fraser River. By then, many of the chum will have already moved through the San Juan Islands on their way to their home streams.

As the chum runs arrive in Central and South Puget Sound, our southern resident orcas are likely to make more treks into these regions, intercepting chum salmon returning to streams along the east side of the Kitsap Peninsula and inside Sinclair and Dyes inlets. The orcas spent about two weeks in Central and North Puget Sound during September, but then headed back to sea. In good years, the whales will venture past the Tacoma Narrows Bridge to hunt chum that are headed to streams as far south as Olympia.

The endangered southern residents now number 73 and their population has reached a critical stage. The Southern Resident Orca Task Force has made recommendations for restoring the orca population, with a primary goal of increasing their food supply.

For humans, we are now approaching prime salmon-viewing season. For years, I have encouraged people to visit our local streams to observe the end of a journey that has taken these fish thousands of miles as they prepare to produce a new generation of chum. Please approach the stream slowly and avoid disturbing the water out of respect for the salmon and to give yourself a chance to observe spawning behavior.

The Kitsap Sun still maintains a map with videos showing some of the best places on the Kitsap Peninsula to view salmon. Some of the videos are out of date, and this year Kitsap County’s Salmon Park near Chico is closed for construction of a new bridge across Chico Creek. Still, the map shows many places to view salmon — including places on this year’s Kitsap Salmon Tours.

Eight places will be featured on this year’s Kitsap Salmon Tours on Saturday, Nov. 9. This annual event, sponsored by WSU Kitsap Extension, is fun and informative for the entire family.

Erlands Point Preserve won’t have a salmon-viewing platform, as I reported in Water Ways Aug. 23, because beavers built a dam that flooded the proposed viewing site. Nevertheless, the preserve will be the place to visit informational booths, learn about salmon and enjoy some refreshments.

Details on each of the sites on the tour can be found on the Kitsap Salmon Tours website, including these additional outings with knowledgeable guides:

  • Nov. 13, 10 a.m. to noon, at Jarstad Park on Gorst Creek,
  • Nov. 13, 11 a.m. to noon, at Poulsbo’s Fish Park on Dogfish Creek,
  • Nov. 14, noon to 1 p.m., at Poulsbo’s Fish Park on Dogfish Creek and
  • Nov. 17, 11 a.m. to 1 p.m., at Salmon Haven on Dickerson Creek.

A second orca calf has been born among the Southern Residents

A new orca calf in J pod is seen swimming with several females.
Photo: John Forde and Jennifer Steven, The Whale Centre

A new baby orca has been born in J pod — one of the three critically endangered Southern Resident pods — and a new wave of hope is rippling through the community of whale supporters.

The calf was spotted and photographed Thursday off the West Coast of Vancouver Island in British Columbia by John Forde and Jennifer Steven. The encounter was just south of Gowland Rocks in the Pacific Rim National Park Reserve.

“That was really exciting,” Jennifer told me about the encounter. “We are super hopeful that this calf will make it and add to the population.”

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Learning the fate of Springer’s stick, a key to an orca rescue

When is a medical intervention appropriate for a sick or ailing killer whale?

It’s a complicated question, as I learned by interviewing a variety of experts in a two-part series just published in the Encyclopedia of Puget Sound.

One aspect of the story that I found interesting was how a simple tree branch helped to make a connection between humans and a lonely orca named Springer. If you have read my story, you might be interested in how the stick played an ongoing role after the rescue.

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Capture and treatment being considered for young emaciated orca

A young orca, said to be on the threshold of death, could be captured for examination and possible medical treatment under a plan devised by federal biologists and other experts.

Scarlet, or J-50, follows close behind her mother Slick, or J-16, in this photo taken Aug. 18.
Photo: Katy Foster, NOAA Fisheries, under federal permit

The capture would be carried out when the 3-year-old female whale, known as J-50 or Scarlet, is found alone at some distance from her pod, according to officials with NOAA Fisheries. One option would be a quick examination and immediate treatment, but preparations also are being made for a possible relocation to an open-water netpen near Manchester in South Kitsap, where she would receive more extensive rehabilitation.

The idea of removing Scarlet from her close-knit family and orca community has received mixed reactions from a team of marine mammal experts, who were called together Monday to advise the federal agency. Meanwhile, some whale-advocacy groups have expressed strong opposition to the plan.

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Impassioned task force faces the challenge of saving endangered orcas

Passion for saving Puget Sound’s killer whales is driving an exhaustive search for ways to restore the whales to health and rebuild their population, but hard science must contribute to the search for workable answers.

I recently updated readers on the efforts of the Southern Resident Killer Whale Task Force, appointed by the governor to change the course of a population headed toward extinction. Read the story I wrote for the Encyclopedia of Puget Sound or the version reprinted in the Kitsap Sun.

I began the story by mentioning the term “no silver bullet,” a term I have heard numerous times from folks involved in the task force. They are emphasizing how difficult it is to restore a damaged ecosystem, while orcas wait for food at the top of a complex food web. All sorts of people are looking for a quick fix, something that will increase the number of Chinook salmon — the orcas’ primary prey — within their range, which includes the Salish Sea and Pacific Ocean from Vancouver Island to Northern California.

The quickest and simplest answers:

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An orca mom’s mourning adds new clue to another mysterious death

UPDATE: Aug. 11, 9 p.m.

After I posted this blog entry this evening, I received this note from Ken Balcomb:

Hello all,
J35 frolicked past my window today with other J pod whales, and she looks vigorous and healthy. The ordeal of her carrying a dead calf for at least seventeen days and 1,000 miles is now over, thank goodness. She probably has lost two others since her son was born in 2010, and the loss of her most recent may have been emotionally hard on her.

—–

It has been heart-breaking to follow the story of the 20-year-old orca mom named Tahlequah (J-35), who has been carrying her dead newborn calf for nearly three weeks. But Tahlequah’s travails might add new insight into the mysterious death of a 3-year-old orca, who washed up on the Long Beach Peninsula in 2012.

Ken Balcomb, the dean of killer whale research in Puget Sound, has always maintained that the young whale, designated L-112, was killed by a concussive blast of some sort that caused massive trauma inside her skull. He suspects that military operations were to blame.

A 3-year-old orca known as L-112 shown here before her death in 2012.
Photo: Center for Whale Research

The Canadian Navy acknowledges that it was conducting exercises near the U.S.-Canada border up to seven days before the dead whale was found. The activities, which included the use of sonar and detonations, started 85 miles northwest of the Strait of Juan de Fuca and ended up inside the Strait. The detonations were said to be too small to kill a whale except at a very close range.

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Two deaths, no births for Southern Resident orcas over the past year

Two deaths — no births. The annual census of Puget Sound’s resident orcas shows a continuing decline in their population, as the normally social killer whales focus their attention on finding enough food to survive.

Crewser, or L-92, a 23-year-old male orca who died in recent months. // Photo: Dave Ellifrit, CWR

The latest whale to go missing and presumed dead is 23-year-old Crewser, or L-92, according to Ken Balcomb, director of the Center for Whale Research. Crewser was last seen alive by CWR staff in November. That was before coastal observers reported that he appeared to be missing from L pod earlier this year. On June 11, Ken and his fellow researchers got a good look at both J and L pods in the San Juan Islands and concluded that L-92 was indeed gone. (Check out the CWR report on L-92.)

Crewser was one of the so-called Dyes Inlet whales, a group of 19 orcas that spent a month in the waters between Bremerton and Silverdale in 1997. (I described that event for the Kitsap Sun in 2007.) Crewser was only 2 years old when he was with his mom, Rascal or L-60, during the Dyes Inlet visit.

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Whale watchers update guidelines; Canada to restrict salmon fishing

Commercial operators who take visitors on whale-watching cruises in the Salish Sea have vowed to follow new, more restrictive guidelines to reduce noise and disturbance around the endangered Southern Resident Killer Whales.

The new guidelines, adopted by the Pacific Whale Watch Association, go beyond state and federal regulations and even beyond the voluntary “Be Whale Wise” guidelines promoted by state and federal agencies and many whale advocacy groups. For the first time, the commercial guidelines include time limits for watching any group of whales.

Meanwhile, the Canadian government has announced that it will restrict fishing for chinook salmon — the killer whales’ primary prey — to help save the whales from extinction. The goal is to reduce fishery removals of 25 to 35 percent, but details have yet to be released. More about that in a moment.

The new whale-watch guidelines are based largely on recent research into much how much noise reaches killer whales when multiple boats are in the vicinity, said Jeff Friedman, president of the PWWA.

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Killing of baby orca raises questions about whales’ social structure

By now, you may have heard about the male transient killer whale who attacked and killed a newborn orca while the baby was swimming next to its mother.

A newborn transient orca swims next to its mother shortly before being attacked by an unrelated adult male orca. // Photo: Jared Towers

Jared Towers, a researcher with Canada’s Department of Fisheries and Oceans, witnessed the killing. He said he was both “horrified and fascinated” by the event, which he described as the first case of infanticide ever reported among killer whales. The incident took place in Canadian waters near the north end of Vancouver Island.

Jared told reporter Bethany Lindsey of CBC News that the distressing scene is something that he will never be able to unsee, but he did his best to observe and record the rare incident.

This killing of a tiny calf by an unrelated male orca has been troubling me since I first heard about it more than a week ago — and that’s what I told longtime orca researcher Ken Balcomb when I called him on the phone.

“I was shocked, as was Jared,” Ken told me. “It is very unusual. The interesting thing is that we know the individual who killed the baby. We don’t know why it happened. It could have been just a squabble of some sort.”

It wasn’t just the male orca involved. The attacker’s mother also played a role in keeping the mother of the calf at bay and ultimately dragging the dead baby away.

In the animal world, infanticide occurs in a myriad of situations among terrestrial species, including lions, rodents and even primates, Jared recounted in a paper published in the journal Scientific Reports. The practice of killing infants of the same species has also been observed in three types of dolphins.

The situations are too rare to identify specific causes, Jared noted, but several hypotheses have been put forth. The leading suggestion is that the death of the infant causes the mother to stop lactating and makes her fertile again. That means the attacking male may have a chance to integrate his genes into the population, as opposed to a competing male.

Less likely reasons, at least in this situation, involves the goal of reducing the number of mouths to feed when food is scarce for a given population. In some species, an infant may be cannibalized for food. But in this case food is not especially scarce for transients, which eat seals and sea lions. Also, there was no evidence of feeding, such as oil on the water or birds in the air, Jared reported.

“Lastly,” Jared writes, “non-adaptive explanations for infanticide purport that it is a socially pathological behavior that may be conducted accidentally or as a result of environmental stressors.”

Killer whales as pathological killers? That’s something to ponder. But, again, there is no evidence to point to a particular cause in this case.

I can’t help but wonder if transient killer whales, which eat marine mammals, may be more prone to committing infanticide than resident killer whales, which eat only fish. No doubt the male transient would know the technique for killing an orca calf, which is about the size of a sea lion.

Ken Balcomb has observed teeth marks on some of the Southern Resident killer whales, sometimes the result of juveniles playing too rough.

“Usually it’s a young whale biting a big whale,” he said. “They don’t have any hands, so they just bite. We’ve seen young whales tussling around together.”

On rare occasions, Ken has also observed serious wounds on some whales, including one adult male whose dorsal fin was bent over during an apparent attack by another orca. The size and shape of the teeth marks, known as rakes, provide clues to the size of the attacker. But since nobody sees most of the serious attacks, the cause or behavior leading up to the incidents will never be known.

In the recent case, which occurred in December 2016, Jared and his fellow researchers went out to observe a group of transients, whose calls had been picked up on hydrophones. When the researchers got to the area just north of Johnstone Strait, they saw an older female, known as T068, swimming with her 32-year-old son, T068A. The two were following a group of three orcas swimming unusually fast.

In that second group was a 13-year-old mother with a 2-year-old calf along with her 3-year-old sister, who exhibited bleeding wounds on her sides and loose flesh on her dorsal fin. About a mile ahead was the 28-year-old mother of the two sisters, T046B, who was accompanied by three young whales, an 8-year-old, a 5-year-old and a newborn.

The entire group of related whales came together just before noon near Haddington Island, while the two unrelated whales were about 200 yards behind and still following.

The attack apparently began about 20 minutes later with observations of splashing and erratic movements, then the male attacker was seen to move away from the group. The other whales followed. When they all came together, they began circling vigorously. That’s when the researchers caught up with the whales and noticed that the baby was no longer with its mother.

The male attacker “swam close past the research boat, and the fluke of the neonate could be seen in his mouth with the body intact trailing underneath his lower jaw,” states the report.

The baby’s mother seemed to chase the male attacker, while the attacker’s mother attempted to block her way.

“Intense vocal activity could be heard through the hull of the boat, so the hydrophone was deployed,” the report says. “A wide variety of excited discrete and aberrant pulsed calls, whistles, and percussive sounds were recorded….

“At 12:35, (the baby’s mother) rammed (the male) near the surface with sufficient force to cause a noticeable undulation through his body, sending blood and water into the air,” the report says.

The event was over about as quickly as it began, with the male carrying away the dead baby. Later the male’s mother was seen carrying the lifeless calf. The larger family group followed the two, staying about 200 yards behind and off to one side.

The researchers followed for another hour and a half, when underwater video showed that neither the male nor his mother had the baby. A short time before, they were seen circling as if paying attention to something below them. As darkness fell, the researchers broke off the observations and headed home, but not before noticing that the male had the intact baby in his mouth again, as he and his mother continued on.

Jared said it is not surprising that the attacker’s mother assisted her son, “because bonds between maternally related killer whales can be particularly strong.” After all, orca moms are known to help their sons find food and even share food with them. The mother’s bloodline would be continued through her son by the killing, provided that the dead infant was not his offspring and that he could later mate with the baby’s mother.

Killer whales are top predators and complex creatures. Their actions cannot always be explained. I remember being surprised to learn that resident orcas occasionally kill harbor porpoises, but they never eat them. See my story in the Encyclopedia of Puget Sound.

My discussion with Ken brought me back to the harsh reality of our world. Maybe we can’t fully explain why a male killer whale would attack a newborn of his own kind. But who can explain why a human being would abuse and sometimes kill his own child or take a gun and kill a large number of strangers?

Can carefully planned fishing seasons help the endangered orcas?

Salmon harvests in Puget Sound have been shared between Indian and non-Indian fishermen since the 1970s, when the courts ruled that treaties guarantee tribal members half the total catch.

Now a third party — Puget Sound’s endangered orcas — could take a seat at the negotiations table, at least in a figurative sense, as their shortage of food becomes a critical issue.

It isn’t at all clear how fishing seasons could be structured to help the Southern Resident killer whales, but the issue was discussed seriously at some length yesterday, when the 2018 salmon forecasts were presented to sport and commercial fishers. Thus began the annual negotiations between state and tribal salmon managers to set up this year’s fishing seasons.

General areas, in blue, where fishing closures in British Columbia are planned to provide extra salmon for Southern Resident killer whales.
Map: Department of Fisheries and Oceans

Penny Becker, a wildlife manager with the Washington Department of Fish and Wildlife, said a steady decline in the body mass of the Southern Residents has been observed, as the population fell to a 30-year low of 76 animals. People are calling for emergency measures, she said, noting that both Gov. Jay Inslee and the Legislature are working on ideas to protect the whales. See Water Ways Feb. 23 and Water Ways Feb. 17 and the Encyclopedia of Puget Sound, Nov. 2, 2017.

Concerns are running equally high in British Columbia, where the orcas spend much of their time in the Strait of Georgia. The Canadian Department of Fisheries and Oceans has proposed an experiment with fishing closures this year in four areas frequented by the orcas:

  • Mouth of the Fraser River
  • West side of Pender Island
  • South side of Saturna Island, and
  • Strait of Juan de Fuca

“The primary objective of the proposed measures is to improve chinook salmon availability for SRKW by decreasing potential fishery competition, as well as minimizing physical and acoustic disturbance in key foraging areas to the extent possible,” states a “discussion paper” (PDF 1.9 mb) released Feb. 15.

The closures would be in place from May through September this year, with increased monitoring to measure potential benefits to the whales. Comments on the proposal are being taken until March 15.

Canadians also are working with ship owners to see if noise can be reduced significantly by slowing down large vessels moving through the Salish Sea. Previous studies have shown that noise reduces the ability of whales to communicate and to find food through echolocation. Experts are compiling the results of the “Haro Strait Vessel Slowdown Trial” conducted last year.

One bill in the Washington Legislature would require boaters to slow down to 7 knots when in the vicinity of killer whales.

Limiting fishing in specific areas of Puget Sound, such as the west side of San Juan Island, could be implemented through state-tribal negotiations, Penny said. The closures would occur during summer when chinook salmon — the orcas’ primary prey — are in the area. One option would be to implement the closures on certain days of the week.

Some people have talked about giving the orcas a clean break from whale watchers, and that could involve excluding whale-watch boats from salmon-rich areas at the same time as the fishing closures.

“We’re looking for creative solutions to make this work within our constraints,” Penny told the group.

One fisherman at the meeting said every person on the water should automatically turn off his motor and sit still when whales are approaching. It’s a courtesy to help the killer whales find fish, he said, and anyway the fish are not going to bite on one’s line while whales are around. Generally, they don’t stay long in one place.

One bill in the Legislature would help the Southern Residents by increasing hatchery production of chinook salmon in Puget Sound. Reaction to the idea has been mixed, because hatchery salmon have been known to affect the fitness and genetic makeup of wild salmon. If approved, the boost in hatchery production would likely be a temporary solution.

Sport fishermen generally like the idea of increased hatchery production, because they would be encouraged to catch all the hatchery fish not eaten by killer whales.

The hatchery bill, HB 2417, was approved unanimously by the House Agriculture and Natural Resources Committee. No further action has been taken so far, but its provisions could be attached to the supplementary budget with funds specified for hatchery production.

Tuesday’s meeting in Lacey launched the beginning of the negotiations between state and tribal salmon managers, a process known as North of Falcon. The name comes the fishery management area from Cape Falcon in Oregon north to the Canadian border. The full schedule of meetings and related documents can be found on the WDFW website.

Forecasts approved by WDFW and the tribes predict poor returns of several salmon stocks this year in Puget Sound, the Pacific Ocean and the Columbia River, resulting in limited fishing opportunities.

“We will definitely have to be creative in developing salmon fisheries this year,” Kyle Adicks, salmon policy lead for WDFW, said in a news release. “I encourage people to get involved and provide input on what they see as the priorities for this season’s fisheries.”

Warm ocean conditions and low streamflows in recent years affected several salmon stocks returning this year. As ocean conditions return to normal, experts hope for improved salmon runs in years to come.

A total of about 557,000 coho returning to Puget Sound is about 6 percent below the average over the past 10 years. Extremely low numbers predicted for the Strait of Juan de Fuca and the Snohomish River are expected to force managers to limit fishing in those areas.

While hatchery chinook returning to Puget Sound are expected to be 38 percent higher than last year, the need to protect “threatened” wild chinook could mean ongoing fishing restrictions in many areas.

Next month, NOAA, which oversees threatened and endangered species, is expected to provide guidance for managing this year’s fisheries, including possible discussions about protecting Southern Resident killer whales.

A 10-year “Comprehensive Management Plan for Puget Sound Chinook” is scheduled to be resubmitted this summer in response to comments received from NOAA on the first draft.

Plans for protecting Puget Sound chinook and Southern Resident killer whales have begun to overlap in major ways, as saving one involves saving the other.