a study finds Orcas — also known as killer whales — are once again on the offensive. Their new target is whale sharks, the world's largest fish species. According to CNN, a new study ...

According to their results recently published in the journal Ecology and Evolution, the culprit is clear: a killer whale ...

How big they are: Up to 32 feet (9.8 meters ... Over time, that name morphed into "killer whales." Scientists don't know whether orcas kill for fun. The marine mammals do some things, like ...

A group of orcas has been observed in the Gulf of California employing "unique" tactics to prey on the world's largest fish ... Orcas, also known as killer whales, are social animals and tend ...

Recent findings used wildlife forensics and citizen science data to provide the first confirmed evidence of killer whale predation on white sharks in Australia.

Killer whales are known for being intelligent, which makes them powerful hunters. Now, new research shows how they take down one of the planet's largest animals. NPR's Lauren Sommer has more.

The pod of killer whales that showed up Thursday, Jan. 30, have only been documented less than 10 times since 1993.

Members of the marine mammal rescue group Dolphins Plus Marine Mammal Responder walk with a Pygmy killer whale that was found stranded off the beach at Long Key State Park in the Florida Keys on ...

Orcas — also known as killer whales — are once again on the offensive. Their new target is whale sharks, the world's largest fish species. According to CNN, a new study — published in the journal ...

A Pygmy killer whale — rarely seen in the shallow waters that surround the Florida Keys — was found injured, sick and stranded just off a beach in the island chain on Sunday, a local marine ...