A pygmy blue whale, Balaenoptera musculus brevicauda, swims in the Banda Sea, Indonesia. This huge cetacean reaches up to 24 meters in length and makes up to about half of all blue whales alive.© ...

Killer whales have been spotted hunting down dolphins - and sharing the catch with pals - for the first time. The dramatic new images of orcas in the Humboldt Current system, off Chile, show them ...

As io9 explains, researchers in Britain and China studied the genetic material of twelve whale and dolphin species, including bottlenose dolphins and sperm whales (those are the ones you are probably ...

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 ...