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This comment reminded me of the book Dragon's Egg https://en.m.wikipedia.org/wiki/Dragon%27s_Egg

When I read Dragon's Egg a few years ago, I realized that it had been the basis of my favorite ST:VOY episode:

Solaris, by Stanislaw Lem, also seems to qualify. (The novel, not the movies.) https://en.wikipedia.org/wiki/Solaris_(novel)

Yes. Solaris is the first thing I thought of.

Well I liked Tarkovsky's rendition. Here is an example of how Tarkosvky envisoned the ocean: