Submerge by Marco Rudy
I actually put this on Hardlined because I thought my friend Marco could use some more exposure on the internets.
It got featured on the Illustration tag! The plan seems to have worked out well :D
You can check him out on deviantART, he is also the new artist on DC’s Swamp Thing, which you should definitely pick up since he is knocking it out of the park, every page.