Tourists on a whale-watching boat off Australia witnessed five families of killer whales attack 150-ton mammal.

Explorers on a submarine at a depth of 2,461 feet had quite a shock when a group of massive sixgill sharks decided the sub was a threat to their feast. The Blue Planet II Team from the BBC nature show ...

Six million years ago, those same geologic forces severed the connection between the Baja peninsula and the mainland, forming ...

Five families of orcas joined forces to hunt down and feed on a blue whale, the largest creature on the planet, in what was an extremely rare sighting off Australia. More than 60 orcas worked ...

These whales typically travel at roughly 5 miles an hour while they feed and travel, however, they can accelerate to more than 20 miles an hour for short bursts of time. They are also among the ...

Imagine looking at a majestic blue whale gliding effortlessly through the ocean, the largest animal on Earth. Now, picture ...

Thousands of gray whales are migrating past the Oregon coast in poor condition, with record-low calf numbers and visible ...

That’s more than twice the weight of a blue whale, the current record holder for the largest animal in existence ... It’s a reminder of the incredible diversity of life that our planet has hosted ...

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Second only in size to the blue whale, the fin whale’s powerful presence can leave onlookers spellbound ... As the second-largest animal on the planet, fin whales (Balaenoptera physalus) are truly ...

Blue whales are not only the largest animal on earth today but the largest known animal ever to have lived on earth. The largest blue whale ever recorded weighed over 199 tons. Even average-sized blue ...