So I’m playing around now and this looks like a good idea. I hope to have it built (perhaps rough animation) by Friday.

A dying squid washed up onto a beach, dying. Nice. But this will allow me to have a look at how the animated textures will work with very little movement of 3d objects. Hopefully I will gain a better understanding of framerates, and how to weave in subtle hand drawn animation – such as sand behind stones being dragged away with the water.
Got a nice idea for the appearance of the sea too. Crumple up pieces of paper and scan them in (so they’re flat) to make an animated texture. The creases should look similar to the surface of water, I just have to be careful and make sure this doesn’t seem too erratic. I’ll figure it out later.
(Yeah, these are basically copied drawings from google image search, so what.)

