They are janitors of the sea, filtering the water and cleaning the ocean, and they can turn into steel-penetrating little torpedoes.
(oof, that was a pre-prod mistake, imho.Did the whole shrimp and only then turned to the internets to catch up on how they swim. They barely move anything other than their tiny teeny swim legs
Ah well, too late to go back, so let's put secondary motion on legs, tail and antenna at least. Might as well do a pic, right ?
Secondary motion is very useful and amazing and can enhance very basic animations easily ! )
( little secondary animated shrimp below the post, for fun )