A typical kreisel tank housing several moon jellyfish A kreisel tank (kreisel becoming German for "spinning prime" or "gyroscope") is really an aquarium shaped just like a horizontal cylinder that's built to maintain delicate animals such as jellyfish and newborn seahorses. These aquariums give gradual, circular h2o circulation which has https://www.kylechamber.org/list/member/age-of-aquariums-7585