Blue whale calves enter the world already the size of a bus, yet they still face danger. A hungry killer whale sees a slow, inexperienced target guarded by a single adult. However, orcas cannot reach ...

Two groups of killer whales are engaging in a terrifying, bloody cannibalistic war beneath the ocean’s surface, where gangs ...

Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called ...

This episode examines the case of missing toddler Vanessa Morales after her mother was found dead in their home.

Microscopic plankton light up the shoreline, creating a glowing blue effect along the beach after dark.