jellyfish

anatomy animal aquarium bell biology biotechnology bloom bodied capture cavity coastal colorful deep diet diffusion digestive eco ecology education epidermis fisheries food free freshwater friendly gelatinous hazardous hazards jellies jelly jellyfish jellyfishes lifespan locomotion marine misnomer movement nerve nervous net ocean oldest organ organs pacific prey products pulsate reproduction respiratory roam scientific sea seas shaped size soft spawning sting stinging surface swarm swimming system tentacles toxicity trailing umbrella vision water worldwide