Numerous tests focused on a dead killer whale have so far failed to determine whether the fatal injury was caused by an underwater explosion or possibly a glancing blow, such as from a boat or even another animal.

Photo by Jeanne Hyde, Whale of a Porpoise
(Click on image to see Jeanne's tribute page)
For the first time, all the key members on a committee studying the death of L-112 got together last week. Their latest conclusions were updated in a report released yesterday.
More tests on tissues taken from the injury site are planned, even as the investigation continues into what human activities may have been occurring in or near the Columbia River at the time of L-112’s death.
The female orca was found dead at Long Beach on Feb. 11. For information, check out my previous reports in Water Ways: