I don’t remember this B horror film starring William Forsythe.
The premise:
After invading the habitat of an undersea creature, the crew of an oil rig must survive the creature’s revenge while also dealing with a severe tropical storm.
In an unexpected twist of casting, William Forsythe plays a human, and this handsome young hunk plays the creature. Go figure. I guess they both wanted to stretch.

Aesthete’s videos are here.

And that ‘handsome’ young hunk’ has apparently moved his career into porn.