Orca pod filmed hunting whale calf in 'unprecedented' California killing spree

A group of killer whales in Monterey Bay killed four gray whales in a week, a phenomenon one researcher hasn't seen in her 30-year career

In an "unprecedented" rash of attacks, a pod of killer whales in Monterey Bay, California, has killed four gray whales in a week, including a calf whose killing was captured on video, according to one marine biologist.

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