Published Jan 4, 2024 by KFSK - Petersburg Late this summer, two killer whales swam into an ocean-fed lake on Prince of Wales Island and got trapped. The effort to free the whales took a collaboration between scientists and residents of the remote island town of Coffman Cove — with some extra help from the whales’ friends.
The response team decided that their best chance of getting the whales out was during the big tides in late September, a few weeks away.
They would use nets in the water, which the whales experience as a barrier. And they would herd the whales using sound — by submerging metal pipes in the lake and banging on the exposed end.
Towers was able to identify the whales as T051, a 42-year-old male, and T049A2, a 16-year-old male. Towers even knew which orcas they’d traveled with in the past. Not only that, he had actual recordings of those travel partners. The recordings could be played under water to lure the stranded whales toward the sound, a technique called “playback.”
Chloe Kotik studies Bigg’s killer whales for her doctorate degree at the University of Alaska Fairbanks. She says the barrier nets and sounds of metal pipes are stressful to whales. She says playbacks can be really effective, but they’re also stressful.
The playback boat led the whales through the channel.
Scientists don’t know where the pair is now, but they will be spotted eventually.
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