A group of little-known killer whales have been identified as big hunters of the sea
CNN
Swimming deep in the Pacific Ocean, a group of little-known killer whales that eat large sea mammals including grey whale calves has been found, researchers say.
In a recently-published catalog, researchers from the University of British Columbia examined 13 years of photo-identification data and more than 100,000 photographs taken off North America's west coasts. What they encountered was a group of what they referred to as "outer coast" transient whales, which rarely traveled to California's coast and hunt massive elephant seals or sea lions.
"What we did with this catalog is report 150 killer whales that seem to be different from other groups of killer whales," said Andrew Trites, director of the Marine Mammal Research Unit at the University of British Columbia, who co-authored the study.
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