New research reveals that orcas around the island of Hokkaido can be split into two distinct forms, offering conservationists ...

With roughly 45 teeth, each up to 10cm long and 4cm wide, orcas are perfectly engineered for ripping and tearing prey. These ...

Orcas, or killer whales, are deadly and beautiful apex predators. Smithsonian removes Trump impeachment text as it swaps his ...

The ocean is full of mighty hunters. Two of the most feared are the shark and the orca (killer whale). Sharks are ancient, solitary predators. They have rows of razor-sharp teeth, whereas orcas are ...