The name ‘moon jelly’ can refer to any of several jellies in the genus Aurelia that are round with a shallow bell and relatively short tentacles. In this case, we mean moon jelly to refer to the species that is common throughout both sides of the north Atlantic Ocean. Like all true jellies, the moon jelly’s tentacles are covered with specialized stinging cells, called cnidocytes. The moon jelly uses these stinging cells to hunt small pelagic invertebrates and occasionally fishes and to capture other food particles with which it might come in contact. The cnidocytes are also the source of the sting that people feel when we come in contact with a moon jelly. Oceana.org https://oceana.org/marine-life/corals-and-other-invertebrates/moon-jelly
These large squid seem to dance across the surface of reefs and sand bottom. They use jets of water to propel themselves. Monterey, CA
Small fish swimming closely together. Monterey Aquarium, Monterey, CA, U.S.A. June 19, 2018