Shiver me timbers

Final piece:

Details1: I painted all the sea spray, smoke and fog in Photoshop as it’s faster that way.

Details2: Painted the teeth and nose for this guy. The rest is geometry (check next picture).

Raw render: Heavy volumetrics to create illusion of distance.

Clay Render: Ocean modifier with water shader from Blenderkit + photoscanned ship and skull from Sketchfab + More curves Sapling gen addon for tentacles, A.N.T. landscapes addon for the horns.