LightningBoltさんのイラストまとめ

While they can and do still produce their own body heat, they are a bit colder than mammals and have slower metabolisms to match. It's unknown if they fall more into the mammal or fish classification as they harbor traits of both.

and snatch birds right from the sky. This evolved over time from powerful leaping to limited flight to prolonged flight, mimicking swimming but through the air, allowing Sirens to grab even birds flying far above the surface of the ocean.

Thick scales and strong bodies allow them to withstand the pressure. These came to be known as Sirens, large, powerful, carnivorous ocean-dwellers with an unusual singing ability that is able to influence the emotions of others, excluding other sirens.

Fishpony headcanons before I forgot to do this and the ideas are swimming (ha) around my head. These are mostly biology and evolutionary based and have some basis in reality but are still fiction so don't freak out if things wouldn't make sense IRL. Any art not credited is my own

Best friends, with benefits. That line would make a lot more sense if I made a lewd version of this like I originally planned, but I don't think that will happen so I'll just leave it at that.

Made by @H1kkageP

In theory, hugs are very easy, in practice, hugs are a nightmare as you want both heads to show. Also Kellin's iris looks bigger than Vic's but it's not, his pupil just makes it look that way, plus expression.

Wow, Vic actually isn't lying this time, surprising.

Not sure about an overlay for color but we'll see.

@RogueBadnik123 Species swapping, I never finished them but I tried once.