An orca, or killer whale, in the Salish Sea near Nanaimo. Alan Daley photo |
My husband, Alan, and I live on a small island in the Salish Sea, the body of water that lies between Vancouver Island and mainland British Columbia. Our place is on a low cliff overlooking the sea, and we spend a lot of time watching what goes on out on the water. That's what Alan was doing one afternoon early in May this year when he spotted a pod of orcas (killer whales). Here's his description of what he saw.
Alan speaking now:
Whales mill about a sea lion, its flipper visible in the turmoil. Alan Daley photo |
The whales repeatedly passed close to it, sometimes passing under it and flinging it partly out of the water.
A sea lion tries to grab a breath, as killer whales attack it. Alan Daley photo |
There were a total of six whales. Two large males mostly hung out upwind/seaward of the action, and slapped the water occasionally with their tails. The smaller whales did most of the work.
They seemed to have a strategy of exhausting the sea lion through physical beating and preventing it from breathing by huge splashes that sent it underwater.
The injured sea lion is tossed into the air again. Alan Daley photo |
Alan contacted the Orca Network to report the sighting and included a couple of his photographs.
Howard Garrett of the Orca Network showed the photos to an expert, Dave Ellifrit of the Center for Whale Research. He identified the two large males as T19B and T19C, members of a pod of Bigg's killer whales -- also called transient killer whales.
Bigg's killer whales live in small family groups led by a female. They prey mainly on sea mammals, hunting up and down the coast of northwestern North America.
The kind of behaviour Alan watched might have been hunting lessons for young members of the pod or simply hunting practice. Steller sea lions are roughly the size of a bear and have formidable teeth and claws, so buffetting them with waves and tail-swipes keeps the whales safely away from the sharp bits.
Whales circle the sea lion, now seriously injured or dead. Alan Daley photo |
There's a wealth of information about both resident and Bigg's killer whales on the Orca Network website. And if you happen to be near the Salish Sea and spot some killer whales, let the network know. Every bit of information helps us understand and protect these amazing animals.
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