Other Invertebrates
Atlantic horseshoe crab
Limulus polyphemus
The Atlantic horseshoe crab is an ancient arthropod closer to spiders than crabs. Facts on its shell, blue blood, Delaware Bay spawning and Vulnerable status.
Animal group · 11 species
Other Invertebrates
Animals without backbones that are not insects, arachnids, crustaceans or mollusks: jellyfish, corals, sea stars, worms and centipedes.
Species profiles
Other Invertebrates
Australian box jellyfish
Chironex fleckeri
The Australian box jellyfish is a cube-shaped, fast-swimming jellyfish of northern Australia with 60 tentacles, 24 eyes and a sting that can kill in minutes.
Other Invertebrates
Common earthworm
Lumbricus terrestris
The common earthworm, or nightcrawler, is a large European worm that digs burrows up to 2 m deep. Facts on its body, ten hearts, diet, mating and role in soil.
Other Invertebrates
Giant African millipede
Archispirostreptus gigas
The giant African millipede is the largest living millipede, up to 33.5 cm long. Its legs, slow detritus diet, curling defense, mites and lifespan explained.
Other Invertebrates
House centipede
Scutigera coleoptrata
The house centipede has 15 pairs of long legs, runs about 0.4 m (1.3 ft) per second and hunts insects in homes. Its size, eyes, venom, range and lifespan.
Other Invertebrates
Magnificent sea anemone
Radianthus magnifica
The magnificent sea anemone is a large Indo-Pacific reef anemone and clownfish host. Its size, colors, algae partners, movement, bleaching and new name.
Other Invertebrates
Moon jellyfish
Aurelia aurita
The moon jellyfish is a clear, saucer-shaped jelly with four ring-shaped gonads and a very mild sting. Its size, diet, life cycle, blooms and where it lives.
Other Invertebrates
Ochre sea star
Pisaster ochraceus
The ochre sea star is the purple or orange starfish of North America's Pacific shores. Facts on its size, mussel diet, keystone role, lifespan and disease.
Other Invertebrates
Portuguese man o' war
Physalia physalis
The Portuguese man o' war is a floating colony, not a jellyfish, with a gas-filled sail and stinging tentacles up to 30 m long. Size, diet, range and sting.
Other Invertebrates
Purple sea urchin
Strongylocentrotus purpuratus
The purple sea urchin is a spiny grazer of Pacific kelp forests and tide pools. Facts on its size, teeth, rock burrows, lifespan, predators and urchin barrens.
Other Invertebrates
Staghorn coral
Acropora cervicornis
Staghorn coral is a fast-growing, antler-shaped reef builder of Florida and the Caribbean. How it feeds, grows and spawns, and why it is Critically Endangered.
