Undertow 3D

I've been learning 3d modeling using Maya, and this is my first completed mini-project, which is an attempt at creating a 3d version of Tool's Undertow album art.
The model was created mostly by extruding polygon faces along curves to create an overall polygonal model. Then I converted this to subdivs to smooth things out.
Four spotlights were used for this scene. Two for highlighting the side tentacles, one for the top-front highlight, and one above for overall lighting and shadows.
Rendered image
Polygonal version
Reference image (original album art)