The owner of a San Diego whale-watching company this week shared extraordinary footage showing Eastern Tropical Pacific killer whales preying on dolphins during recent visits from Mexico.

The southern resident killer whale, known as Tahlequah, has now lost another calf in what the Center for Whale Research called “devastating” news.

The entire team at the Center for Whale Research is deeply saddened by this news and we will continue to provide updates when ...

According to the wildlife charity Whale and Dolphin Conservation (WDC), Indo-Pacific bottlenose dolphins, spinner dolphins, orcas, Australian humpback dolphins and sperm whales have all been ...

Orcas are one of several species of whale and dolphin that have been observed carrying dead offspring. NOAA will continue to monitor Tahlequah's pod, which is called "J Pod." Despite the tragic ...