So I drew here a male and a female.
They are pretty much aquatic humanoids.
They reproduce like people do, and they can breathe air, but they are mostly meant to be underwater.
They can control all things water as they are meant to be guardians of the sea.
I guess the story goes they used to get along with humans until something really bad must have happened between the two races and now they are no longer on friendly terms.
These people also live for a very long time. Hundreds of years.
Alright I guess I'll make a real ref after I fully develop these guys haha