Hydroids

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Sponges - Porifera
Hydroids & Anemones - Cnidaria
Comb jellies - Ctenophora
Flatworms - Platyhelminthes
Nemertine worms - Nemertea
Worms - Annelida
Crabs & Lobsters - Crustaceans
Sea snails, slugs & bivalves - Molluscs
Lamp shells - Brachiopods
Sea mats - Bryozoans
Horseshoe worms - Phoronids
Starfish, Sea Urchins - Echinoderms
Sea Squirts
Fishes
Red Seaweeds - Rhodophyta
Brown Seaweeds - Chromophyta
Green Seaweeds - Chlorophyta

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Biomar data
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Habitas Online
Ulster Museum