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Orcas are learning terrifying new behaviors. Are they getting smarter?

From sinking boats and feasting on shark livers to dining on whale tongue and tossing porpoises around for fun, orcas are displaying some fascinating — and sometimes terrifying — behaviors.

Discovery: Unusual deaths of hundreds of West Coast gray whales linked to lack of Arctic ice

The deaths of more than 700 West Coast gray whales since 2019 is likely the result of low food supplies caused by a lack of sea ice in the Arctic.

Discovery: Unusual deaths of hundreds of West Coast gray whales linked to lack of Arctic ice

The deaths of more than 700 West Coast gray whales since 2019 is likely the result of low food supplies caused by a lack of sea ice in the Arctic.

Discovery: Unusual deaths of hundreds of West Coast gray whales linked to lack of Arctic ice

The deaths of more than 700 West Coast gray whales since 2019 is likely the result of low food supplies caused by a lack of sea ice in the Arctic.

Unusual deaths of hundreds of West Coast gray whales linked to lack of Arctic ice