Other invertebrates
Animals without backbones that aren't insects, arachnids, crustaceans or molluscs: jellyfish, coral and sea anemones, starfish, sea urchins and sea cucumbers, worms and leeches, centipedes and millipedes, sponges and tardigrades.
Coral and sponges are animals, not plants, which surprises a lot of people.
12 animals, A to Z.
- CentipedePredatory arthropods with one pair of legs per body segment.
- CoralSea animals that live as colonies of many identical polyps, each a few millimetres across with a ring of stinging tentacles around its mouth.
- JellyfishSoft, free-swimming sea animals with a bell-shaped body and stinging tentacles.
- LeechSegmented worms related to earthworms, with a sucker at each end.
- MillipedeAbout 12,000 species of slow-moving arthropods with two pairs of legs on most body segments.
- Sea anemonePredatory relatives of corals and jellyfish, named after the anemone flower.
- Sea cucumberAbout 1,786 species of soft, leathery, cucumber-shaped echinoderms living on the sea floor worldwide.
- Sea spongeSimple animals fixed to the seabed, with bodies full of pores and channels.
- Sea urchinAbout 950 species of spiny, globe-shaped echinoderms living on the seabed of every ocean.
- StarfishStar-shaped echinoderms, not fish, with about 1,900 species on the seabed of every ocean.
- TardigradeAbout 1,500 species of plump, eight-legged micro-animals, usually about 0.5 mm long, also called water bears or moss piglets.
- WormEarthworms are soil-dwelling annelids, among nature’s most important recyclers of dead plant matter.
How each answer is decided: How we answer. Every animal, in one list: All animals.