japanese sea nettle, aquarium

Stinging sea nettles are carnivorous. They generally feed on zooplankton, ctenophores, other jellies, and sometimes crustaceans. Nettles immobilize and obtain their prey using their stinging tentacles. After that, the prey is transported to the gastrovascular cavity where it is subsequently digested.

Nettles also eat young minnows, bay anchovy eggs, worms, and mosquito larvae.