Oceans

Sunset - Natural
An attempt to make a less stylized, more realistic scene.

Sunset - Orange

Gold & Silver

Daytime
Deliberately dark like the photographs I've taken of real coastlines, which have been under-exposed so the sea appears like oil or ink, though retaining the film’s blue bias.

Underwater Sunlight & Moonlight
The flare streaks and halo can't be animated, so they aren't quite right.

Pale Blue Wave
Geometry displacement which loops every 200 frames (though the textures don't), but I'm not good enough to add things like spray.

Algae Oceans

Skies & Smoke

Just using lights and sky textures in an otherwise empty scene, with highly exaggerated cloud effects.