have for the first time seen a killer whale drown a baby of the same species. The transient killer whale calf swims with its mother moments before the attack. Even some bears do it, but it hadn't been documented in killer whales before. The male killer whale holds the calf in its mouth. The encounter brings into question some previous assumptions about the sexual behaviour of killer whales.

Source: CBC News March 21, 2018 21:38 UTC