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 ...

A rare encounter was caught on camera off the Big Island when two massive killer whales — also known as orcas — swam right up ...

An analysis of photos, videos, and whale watching accounts reveals that orca whales might be the only natural predators of Earth's largest creatures: blue whales.

Discover interesting facts about whales, how big they can get, ... Despite their name, killer whales — or orcas — are not whales. Instead, they are part of the closely related dolphin family.

UNDATED (WKRC/CNN Newsource) - Scientists discovered that a pod of orcas have developed a new method for killing whale sharks, the world's largest fish. Scientists have believed that killer whales ...

Swimming deep in the Pacific Ocean, a group of little-known killer whales that eat large sea mammals including grey whale calves has been found, researchers say.. In a recently-published catalog ...

Killer whales are among the fastest swimming marine mammals and can reach speeds over 30 mph for short distances. The fastest human on land, Usain Bolt’s 100-meter dash, was about 27 mph.

JUANA SUMMERS, HOST: 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.

Killer whales are among the fastest swimming marine mammals and can reach speeds over 30 mph for short distances. The fastest human on land, Usain Bolt’s 100-meter dash, was about 27 mph.