Black Sea | Mediterranean Sea | Baltic Sea | North Sea | Red Sea | Caspian Sea | Caribbean Sea | Adriatic Sea | Aegean Sea | South China Sea | Sea of Japan | Irish Sea | Westland Sea King | Dead Sea | Arabian Sea | Tyrrhenian Sea | Southend-on-Sea | East China Sea | Ionian Sea | Bering Sea | White Sea | Kara Sea | First Sea Lord | Manly-Warringah Sea Eagles | Dead Sea Scrolls | British Sea Power | Tasman Sea | Sea Islands | Great Big Sea | Coral Sea |
Acanthocidaris curvatispinis is a species of sea urchin of the family Cidaridae.
Acanthocidaris hastingeria is a species of sea urchin of the family Cidaridae.
Acanthocidaris maculicollis is a species of sea urchin of the family Cidaridae.
Austrocidaris canaliculata is a species of sea urchins of the Family Cidaridae.
Austrocidaris spinulosa is a species of sea urchins of the Family Cidaridae.
Centrocidaris doederleini is a species of sea urchins of the Family Cidaridae.
Chondrocidaris brevispina is a species of sea urchins of the Family Cidaridae.
Chondrocidaris gigantea is a species of sea urchins of the Family Cidaridae.
Eucidaris metularia, the ten-lined urchin, is a species of sea urchin in the family Cidaridae.
The subclass Euechinoidea includes almost all living species of sea urchin, and fossil forms going back as far as the Triassic.
The niches and crevices in this coral are home to a range of invertebrates and other organisms including brittle stars, sea urchins, polychaete worms, chitons and algae.
The main intake by the fishing industry consists of kichiji rockfish (Sebastolobus macrochir), Alaska Pollock (Theragra chalcogramma), konbu kelp, salmon, squid, and sea urchin.
The "sea urchin crab" Echinoecus pentagonus is a species of crab in the family Pilumnidae found from the Red Sea and East Africa to French Polynesia and the Hawaiian Islands.
Hakea petiolaris, the sea-urchin hakea, a shrub or small tree species endemic to the south-west of Western Australia
The Antarctic sea urchin is found in circumpolar waters including the Southern Ocean, the Balleny Islands, South Georgia and the South Sandwich Islands, Terra Nova Bay and Victoria Land.