Spin feeders anchor their shells to the ground in shallow water with tough strings and then run around in circles inside their shell using quick legs. Extending a feeding tentacle, they are able to whip up small whirlpools to draw in material from the surface, such as floating leaves or bugs (like I do with my arms at the pool). This they trap inside pockets inside their shell and rapidly much as they go. More advanced designs than the one shown below have feeding tentacles with helical ridges for greater efficiency. They live on planet Lup.
Hello, my name is Dan. I am an author, artist, explorer, and contemplator of subjects large and small. I like bacon. I like pizza. I like bacon pizza. I enjoy long walks on the beach, but prefer the mountains. I am a huge fan of Jesus. When I grow up, I want to be just like him and create my own universes.