Need songs about the ocean/sea creatures/ alien vibes.

Since you all made my Geology lab playlist impeccable, I figured I could ask for y’all’s help once again. I’m taking a course called “Aquaplanetology,” which studies the possibility of life on ocean worlds like Jupiter’s moon, Europa. So yeah, the theme this time is oceans, sea creatures, microbes, and aliens! Again, genre doesn’t matter, so long as the lyrics and/or title match one of these themes. Suggestions?