Killer whales, or orcas, have long been recognized as some of the most intelligent creatures in the ocean. Known for their ...

Although known as "killer whales," orcas are actually the largest ... Examples of behavioral adaptations in orcas: Orcas sleep by swimming side by side in synchrony while one whale remains more ...

An ailing killer whale has been found dead after swimming ... an orca" and died before any attempt could be made to put it to sleep. The activists said they were staying with the body to make ...