Marine Invertebrates
26 entries in the Marine Invertebrates compendium.
SpongeAncient filter-feeding animals that lack true tissues and organs.TardigradeMicro-animals known for extreme environmental tolerance.XiphosuraLiving fossil arthropods with a sword-like tail.AcariformesThe most diverse superorder of mites, with ancient origins and global ecological impact.AnomalocarisAn early Cambrian apex predator and stem-group arthropod.ArenicolaGenus of lugworms known for burrows and mass breeding.AscidiaceaSac-like marine filter feeders with a cellulose tunic.RudistsExtinct bivalves that built vast Cretaceous reefs.SalpBarrel-shaped planktonic tunicates with efficient jet propulsion.Sand dollarFlat, burrowing sea urchins with a coin-like test.Sea appleColorful sea cucumbers of the genus Pseudocolochirus.Sea cucumberBenthic detritivores with a leathery skin and catch collagen.Sea slugShell-less marine gastropods with vivid colors and diverse adaptations.Sea snailMarine gastropod molluscs with coiled shells, eaten by humans and animals.Sea spiderMarine arthropods with tiny bodies and enormous legs.Sea urchinSpiny marine echinoderms studied as model organisms since the 19th century.ShipwormMarine bivalves that bore into and consume submerged wood.Slipper lobsterFamily of achelate crustaceans with distinctive flattened antennae.Spanish dancerA large, colorful sea slug that swims like a dancer.Spiny lobsterMarine crustaceans known for spiny antennae and lack of claws.Squat lobsterDorsoventrally flattened crustaceans with long curled tails.Sunflower sea starThe sunflower sea star (*Pycnopodia helianthoides*) is a large predator native to the nortTunicateMarine chordates with a tunic and tadpole-like larvae.Umbrella octopusDeep-sea octopuses with an umbrella-like web between their arms.Vampire squidA deep-sea cephalopod that thrives in oxygen-poor waters.WhelkCarnivorous sea snails with tapered shells, eaten and used for dye.
Browse Marine Invertebrates in the interactive codex →