Small, agile fish use jellyfish to conserve energy for their own growth

and recurved teeth behind the sunfish's cheeks. Even tiny lobster slipper larvae can cling to the bell of a jellyfish and hitch a ride, snacking on the jelly while they preserve their own energy for growth. Small agile fish use the jellies as moving reefs for protection, darting between tentacles without ever touching them.Nudibranchs, which are sea slugs covered in protective slime, can actually steal the jelly's defenses by eating the cnidocytes and transferring them to specialized sacks for later use, as weapons against their own predators.