What Killed Orca Victoria? Some Point To Naval Tests The U.S. Navy is in the process of renewing its permits to conduct sonar and explosive tests off the coast of the Pacific Northwest. But the recent unexplained death of a young orca who washed ashore in February has thrown a wrench in the process. Experts say injuries to the whale may indicate she was exposed to an underwater explosion or sonar testing.
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What Killed Orca Victoria? Some Point To Naval Tests

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What Killed Orca Victoria? Some Point To Naval Tests

What Killed Orca Victoria? Some Point To Naval Tests

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You're listening to ALL THINGS CONSIDERED from NPR News.

Scientists are trying to solve the mystery of what happened to a young killer whale known as Orca L112. She's one of about 85 endangered killer whales left in Puget Sound. And in February, she washed up dead on the coast of Washington State. A new report details bruising and hemorrhaging on the orca's body. And whale experts suspect her death may have been caused by activities carried out by the Navy.

From member station KUOW in Seattle, Ashley Ahearn explains.

AHSLEY AHEARN, BYLINE: There are few people in the world who know the killer whales of Puget Sound as well as Ken Balcomb does. He's been studying them for more than 30 years, here at the Center for Whale Research on San Juan Island.


AHEARN: Balcomb only has to listen to this underwater recording for a few seconds before he starts to recognize the different families of orcas.

DR. KEN BALCOMB: You hear like that little whistlely sound. That's common in L pod.

ASHLEY AHEARN, BYLINE: And L pod is the family everyone is talking about right now. Orca L112, to be more specific, also known as Victoria, was a 3-year-old that washed up dead in February. Balcomb has been following Victoria since she was about 3 weeks old. In fact, he's the one who named her and observed her regularly in Puget Sound.

BALCOMB: Last summer, she just put on a beautiful display of breaching and jumping and carrying on. Then the next I heard of her, she was getting a postmortem on Long Beach, Washington. She was extremely bruised. She looked like she'd been in a war of some kind or just severely beaten.

DR. JOE GAYDOS: It could have been a host of different things that caused that blunt trauma, and that's really what we're trying to work out right now.

AHEARN: Joe Gaydos is part of the team that's conducting an investigation into Victoria's death for the National Oceanic and Atmospheric Administration. He's a veterinarian with the University of California Davis and the SeaDoc Society.

GAYDOS: Everybody always wants a scapegoat, and people really don't like when you have to come out and say we think this happened, but we don't know why when they want an answer.

AHEARN: So far, Gaydos says the team can't pinpoint a cause of death. Here's what they do know: The young orca appeared to have been dead for up to a week before she washed ashore. That means her tissue samples weren't in good shape. The scientists believe she was healthy when she died, though, meaning that this wasn't an example of starvation or sickness. But here's the puzzling bit: Even though she was badly bruised, Victoria had no broken bones or any kind of cuts or lacerations. Ken Balcomb and others in the whale research community have some pretty strong suspicions about what happened to her.

BALCOMB: I can't imagine it will be anything other than consistent with extreme pressure trauma such as a bomb or perhaps even a sonar at very close range.

AHEARN: Balcomb and others are pointing the finger at the Navy, which is currently permitted to drop up to 10 bombs in its practice range each year and use sonar for over 100 hours. The practice range covers an area about the size of California in the waters off the coast of Oregon and Washington. The Navy denies any responsibility for Victoria's death. At a recent presentation on San Juan Island, Navy representatives spoke to a packed room of whale experts and concerned residents. John Mosher is the Navy's Northwest environmental program manager for the Pacific Fleet.

JOHN MOSHER: There really is no explanation from Navy training or Navy activities that would explain that particular stranding event.

AHEARN: The cause of death for more than half the strandings of marine mammals in Washington is never determined. Environmental groups have filed a lawsuit saying U.S. naval sonar and explosive exercises can harm marine mammals and should be limited. The details of Navy actions are classified, but there are underwater recordings from the time when Victoria died that could provide more information. Those recordings will be released in August. For NPR News, I'm Ashley Ahearn in Seattle.

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