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AlgaeGreen, brown and red algae and marine plantsBlades, branches, filaments or seagrass meadows.AnnelidsFireworms, feather-dusters and tube wormsElongated bodies, bristles or feather crowns.BryozoansLace, encrusting and branching coloniesColonies with tiny repeated chambers.CnidariansAnemones, jellyfish, corals and sea fansTentacled polyps or gelatinous bodies.CrustaceansCrabs, hermit crabs, shrimps and lobstersJointed legs and a hard outer shell.CtenophoresSmall gelatinous animals with comb rowsTransparent, oval or lobed bodies.EchinodermsSea stars, urchins, brittle stars and sea cucumbersRadial arms, spines or an elongated body.FlatwormsMarine flatwormsThin, flat, unsegmented bodies.MolluscsSnails, bivalves, slugs, octopuses and cuttlefishShells, soft bodies or sucker-bearing arms.SpongesCrusts, masses, branches and tubesAttached animals with pores and openings.TunicatesSolitary and colonial sea squirtsVisible siphons or groups of small individuals.VertebratesFish, rays and other marine vertebratesFins, a fish-shaped body or a ray silhouette.I do not knowSearch across all groupsYou can choose a group later by comparing the images.
Generated example images. If you do not recognise the group, compare the different forms.