Types of Jellyfish
Species↕ | Scientific Name↕ | Bell Diameter (cm)↕ | Sting Level↕ | Habitat↕ | Known For↕ |
|---|---|---|---|---|---|
Box Jellyfish | Chironex fleckeri | 30 | Lethal | Indo-Pacific coasts | World's most venomous marine animal, kills in minutes |
Moon Jellyfish | Aurelia aurita | 25 | Mild | Coastal waters worldwide | Translucent with four clover-shaped gonads, harmless to humans |
Lion's Mane Jellyfish | Cyanea capillata | 200 | Painful | Cold northern seas | Longest animal on Earth, tentacles up to 37 meters |
Immortal Jellyfish | Turritopsis dohrnii | 0.5 | None | Mediterranean, worldwide | Reverts to polyp stage, biologically immortal |
Portuguese Man o' War | Physalia physalis | 30 | Severe | Tropical oceans | Not a true jellyfish but a siphonophore colony, blue sail |
Nomura's Jellyfish | Nemopilema nomurai | 200 | Moderate | East China Sea, Japan | Weighs up to 200 kg, massive blooms swamp fishing nets |
Upside-down Jellyfish | Cassiopea andromeda | 30 | Mild | Mangroves, lagoons | Rests bell-down on seabed, photosynthesizes via symbionts |
Atolla Jellyfish | Atolla wyvillei | 15 | Mild | Deep sea worldwide | Burglar alarm bioluminescence when attacked |
Cannonball Jellyfish | Stomolophus meleagris | 25 | Mild | Atlantic, Pacific | Dried and eaten as a delicacy in East Asia |
Mauve Stinger | Pelagia noctiluca | 12 | Painful | Mediterranean, Atlantic | Bioluminescent, causes beach closures in blooms |
Sea Nettle | Chrysaora quinquecirrha | 30 | Painful | Atlantic coasts | Long trailing oral arms, chokes Chesapeake Bay in summer |
Irukandji Jellyfish | Carukia barnesi | 2.5 | Lethal | Northern Australia | Tiny but causes the dreaded Irukandji syndrome |
Crown Jellyfish | Cephea cephea | 60 | Mild | Indo-Pacific | Cauliflower-like crown, purple-blue hue |
Pacific Sea Nettle | Chrysaora fuscescens | 50 | Moderate | Pacific coast of US | Golden bell, star of aquarium exhibits |
Flower Hat Jellyfish | Olindias formosus | 15 | Painful | Western Pacific | Technicolor striped bell and curled tentacles |
White-spotted Jellyfish | Phyllorhiza punctata | 60 | Mild | Western Pacific | Invasive in Gulf of Mexico, filters huge volumes of water |
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