Nice article: https://www.theguardian.com/commentisfree/2025/jun/30/orca-k...
These supposedly serious cetaceans have been spotted massaging each other with kelp stalks. This is the sort of performative nonsense you’d expect from dolphins
When you’re the apex predator of the world’s oceans you can get away with all sorts of silly nonsense!
And they got their name as a mistranslation into English - if I remember correctly they were originally named in Spanish as "killers of whales" or "whale killers", because they do that
Orcas are indeed dolphins, and also whales.
Wiktionary supports that etymology, and it is generally a high-quality source for etymology, but it's troubling that this one isn't cited.