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Orcas have sunk 3 boats in Europe and appear to be teaching others to do the same. But why?
By Sascha Pare published
Scientists think a traumatized orca initiated the assault on boats after a "critical moment of agony" and that the behavior is spreading among the population through social learning.

Extremely rare white killer whale spotted off California coast
By Harry Baker published
The mostly white orca calf was spotted by a whale-watching vessel. It most likely has a pigment-related condition called leucism, experts say.

Extremely rare albino dolphin spotted in Africa, possibly for the 1st time ever
By Harry Baker published
The all-white bottlenose calf, which was swimming with around 200 other dolphins, was spotted by a lucky couple on their wedding day.

Inbreeding may be causing orca population in the Pacific Northwest to crash
By Jennifer Nalewicki published
Inbreeding among an endangered population of orcas off the coasts of British Columbia, Washington and Oregon is a cause for concern.

Photo shows 'massive' great white shark scarred after rare battle with 2 serial killer orcas
By Hannah Osborne published
A pair of orcas off the coast of South Africa have been ripping open sharks and feasting on their livers for the last eight years. A great white shark that survived an attack by the serial killer brothers has now been identified through huge scars across its massive body.

2 orcas slaughter 19 sharks in a single day in South Africa, eating their livers and leaving them to rot
By Jennifer Nalewicki published
An orca killing spree continues in South Africa. Their target: shark livers.

Orca appears to adopt (or abduct) a baby pilot whale
By Patrick Pester published
Researchers have recorded an orca swimming with a pilot whale calf in a possible interspecies adoption, but how the two came together is a mystery.

Orca males are burnouts who let their moms do all the hunting, surprising study finds
By Jennifer Nalewicki published
Mama orcas are forgoing having more young and instead dote on their existing sons.
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