Whale watchers in Madeira captured the astonishing moment orcas took down the deep-diving marine mammal. The predatory ...

Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced Monday, in what they said is the first evidence of marine mammals making their ...

Killer whales rarely risk hunting leopard seals – Antarctica’s second top predator. But when reinforcement whales appear, this group of killer whales has a technique for capturing this aggressive ...