Orcas, or killer whales, are deadly and beautiful apex predators.

Orcas, also called killer whales, are apex predators of the ocean. Their intelligence, hunting skills, and sheer power make ...

Over time, that name morphed into "killer whales." Scientists don't know whether orcas kill for fun. The marine mammals do some things, like killing and tossing dead porpoises in the air ...

UK trade in ivory from hippos, narwhals, orcas and sperm whales has been banned as part of conservation efforts, the ...

Award-winning author and ocean activist Mark Leiren-Young is bringing the mysterious world of octopuses to young readers in his new book, Octopus Ocean: Geniuses of the Deep.

Dive into these 17 fascinating whale facts that seem straight out of a science fiction ... arteries large enough for a human to crawl through when fully expanded. Killer whale jumping out of water.

Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton ...

New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

Recent findings used wildlife forensics and citizen science data to provide the first confirmed evidence of killer whale ...