User blog comment:Deltakatknight/Subnautica creature concept page: ???/@comment-30868164-20170306143756

If it's a reptile, I would call it the Serpent Leviathan or Sea Serpent Leviathan. Also, if you want it to be a leviathan-class creature, it could possibly be a little longer?

Also, that drawing is perfection. You obviously spent a lot of time on it. Good job. :D

[EDIT]

Replace "reptile" with a "reptile-like life-form".