Researchers stumble upon orcas devouring a pygmy sperm whale off the coast of California. This gives researchers a closer look into orca feeding habits.
When a research team motored down a predetermined transect line offshore from Monterey, California, they witnessed some commotion — many excited seabirds were hovering over some big splashing. They went to take a closer look, and saw orcas were involved.
As the team got closer, they saw that orcas and albatrosses were feeding on pieces of floating tissue in the water. While the researchers were there to conduct distribution surveys of whales, dolphins and porpoises, they also managed pick up lungs and the heart floating nearby. They put the organs on ice to identify the victim’s species back at the lab, which was a pygmy sperm whale.
But DNA from the heart and lung confirmed the species was a pygmy, meaning this was the first recorded example of orca predation on this species in the North Pacific, Olson says.During the event, the researchers observed two adult males with tall dorsal fins and two whales with shorter dorsal fins that could have been females, or younger males whose fins hadn’t yet matured.
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