Biology

[Nautipus]

Originally Posted by Coffeehouse

The dolphins who encircled these swimmers for 45 minutes were also Bottlenose Dolphins, unique among dolphins for their ability of self-awareness. Incidentally I came across a similar occurrence in an article now, where a surfer was bitten 3 times while on his surfing board, the white shark trying to chew off his right left, when suddenly dolpins intervened and, remarkably, did the exact same thing, swimming around and around the surfer until aid arrived.

That species of Dolphin is also the most aggressive, supposedly moreso than orcas, which are in fact dolphins.