Killer whales are expanding their territory and have moved into Arctic waters as climate change melts sea ice, with two genetically distinct populations being identified by Canadian scientists.

Their backs and tall dorsal fins glistened in the Arctic twilight as they dived and surfaced and worked in teams to corral, stun, and devour silver herring. At times an orca would smack the ...

Social media users were blown away by the scene in the viral clip, with one saying: "I would be in heaven if this happened to me." ...

In this photo provided by NOAA Fisheries, the orca known as J35 (Tahlequah) carries the carcass of her dead calf in the waters of Puget Sound off West Seattle, Wash., on Wednesday, Jan. 1 ...

It analyses the extraordinary 330,000 kilometers of marine surveys conducted by ORCA in 2023, recording 55,604 whales and dolphins in oceans worldwide from the Arctic to the Antarctic, the North ...

UK trade in ivory from hippos, narwhals, orcas and sperm whales has been banned as part of conservation efforts, the ...

There are five types of killer whale in Antarctica, but only three found in these waters, near the peninsula south of South ...

An endangered Pacific Northwest orca that made global headlines in 2018 for carrying her dead calf for over two weeks is doing so once again following the death of her new calf, in another sign of ...