Sea anemones, corals, sea firs & jellyfish (Cnidaria)
Sea gooseberries & comb jellies (Ctenophora)
Snails, slugs, mussels, cockles, clams & squid (Mollusca)
Segmented worms e.g. ragworms, tubeworms & fanworms (Annelida)
Arthropods, joint-legged animals, e.g. insects, crustaceans & spiders (Arthropoda)
Sea mats, horn wrack & lace corals (Bryozoa)
Starfish, brittlestars, sea urchins & sea cucumbers (Echinodermata)
Sea squirts, fish, reptiles, birds and mammals (Chordata)
Green seaweeds and stoneworts (Chlorophyta)
Seagrass, tassel weeds, reeds, sea pink & grasses (Angiospermophyta)
Brown and yellow-green seaweeds (Ochrophyta)