An orca pod has been harassing and killing porpoises for decades — but they don't eat them. Scientists still don't know why.

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tops of killer whales above water in Pacific Northwest
Killer whales near the San Juan Islands in Washington.

Wolfgang Kaehler/Getty Images

9 orcas have died so far this year after they were trapped in fishery equipment off the coast of Alaska

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An orca swimming.
Nine killer whales have died after being caught in fishery equipment off the Alaska coast this year.

Enrique Marcarian/Reuters

Stunning video appeared to show 2 humpback whales trying to save a seal from a pod of orcas, but the seal may have been trying to hide behind the gentle giants

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Humpback whale adult and baby; pod of orcas at water surface
Orcas sometimes prey on humpback whale calves.

Kara Capaldo/Getty Images; Ron Sanford/Getty Images

Graphic video shows orcas hunting and eating dolphins near San Diego. Orca scientist says they just like playing with their food.

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two orcas pursue a dolphin which is about the size of their fins in deep blue water
A screengrab from the video shows a juvenile orca following an adult as it hunts a dolphin.

Domenic Biagini/Gone Whale Watching San Diego

After a half-century in captivity, could Tokitae the orca finally be free?

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The killer whale Tokitae, also known as Lolita, may finally be released after more than 50 years in captivity in the world's smallest orca enclosure.

Orcas keep attacking sailboats, sometimes sinking them. Scientists are looking for answers.

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Stock photo of a pod of orcas.
A pod of orcas swim near a boat.

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Orca pair devour 17 sharks in a day in South African killing spree, say marine biologists

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Orca whales Port and Starboard, who are notable due to their unusual fins
Orca whales Port and Starboard, who are notable due to their unusual collapsed fins

Marine Dynamics Conservation Trust

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