are brine shrimp and krill the same thing?
Big eyes, long tentacles, dangling little legs -- it could be a shrimp or a krill. Both are crustaceans, but belong to different orders. Shrimp are the Natantia suborder of the Decapoda order; krill are of the Euphausiacea order. There are approximately 85 species of krill and more than 1,900 species of shrimp.