Octovenian

From the introduction:

A playable race of octopus folk.

Publisher's blurb:

Working as sellswords in a dingy coastal town, scouring the seafloor for long lost treasure, or anywhere else there’s water and a fight to be had — this is where you’ll find the nomadic octopus people known as the octovenians!

After the fall of their undersea empire over a thousand years ago, the scattered survivors took to the life of wandering mercenaries. Warfare is what they know, and adventuring is how they make a living.