Let's learn cetacean aggression precursors!
Here's a fun experience I managed to captured when I was doing a sea pen check on scuba while the dominant male and female (J and Layla) pair were getting agitated. Lots of signature whistling, rapid and sharp turning and circling, syncing movements, very minor pec flaring.
Here that honking noise? That's a dolphin cuss word. They started circling very close to me after this so I slowly ascended and left their lagoon. It was hard to determine if it was towards each other or towards me but I didn't want to hang around to find out. I was very new at this point and was still building my relationship
This was a facility that had very lax protocols around scuba (no buddy, crappy gear, dive with the dolphins it's totally fine!!!) - it was very dangerous!
This is really interesting! And a good lesson in just how subtle signs of aggression/displeasure can be in species we're not familiar with (or familiar seeing as eternally happy, friendly creatures).
Dolphins are strong, wild animals, which are potentially dangerous. For me it really hit home when I got to do a free swim with some dolphins and the experienced trainer with me advised me to swim with my arms in a hoop around my head because "I'd rather have them break your arm than your neck." Not that they were mean or dangerous dolphins! But they are 200+ kg animals of mostly muscle, and what seems a small "kick" with their flukes to them could be disaster for us.
My personal aggression (precursor) experience was swimming with a mom dolphin, Tela. Her daughter was getting trained for open ocean work and she was not happy (her previous calf had had a small accident during his open ocean training and she hadn't forgotten). I got to swim with her like a guest would, just to take her mind off things. She wasn't too pleased. I mean, she was fine with me hanging by her dorsal fin, petting her, but she had one eye directly on me, and the other directly on her daughter. Sometimes she'd open her mouth ever so slightly. She didn't do anything, but it was clear this interaction was on her terms only.
There were also two males that were quite aggressive. Not out of bad character or anything, they just thought there was no better fun in the world than beating each other up. Structured work with them was awesome and they'd rock the stars for you. But as soon as you tried to have some free, fun time with them, it would very quickly devolve into "Hey can we have a fight just for fun???". They were from Cuba and word was that all dolphins from there have a spice that others don't.
Anyway, long ramble, but I find it interesting to see this other side to them. Not to paint them as the new evil creature to hate, but to see them as the full, rounded animal they always have been, and deserve to be seen as.