deep ones

they are from the Lovecraftian mythos with them first appearing in the novel The Shadow of Innsmouth.

The Deep Ones are a race of intelligent ocean-dwelling creatures, approximately human-shaped but with a fishy, froggy appearance. They regularly mate with humans along the coast, creating societies of hybrids.
Lovecraft describes the Deep Ones as a race of undersea-dwelling humanoids whose preferred habitat is deep in the ocean (hence their name). However, despite being primarily marine creatures, they can come to the surface and can survive on land for extended periods of time.

 the closest thing to what a deep one looks like

the 3d art was done by Delcio Gomes