Any member of the order Aplysiamorpha or Anaspidea, large marine gastropod molluscs with a soft internal shell made of protein.

Any of several stalked crinoids, which use the stalk to fix themselves in the bottom of the sea.

plural of sea duck

plural of sea-parrot

plural of sea bird

plural of sea parrot

(obsolete) North Sea

plural of marginal sea

A sea between the Kamchatka Peninsula on the east, the Kuril Islands on the southeast, the island of Hokkaidō to the far south, the island of Sakhalin along the west, and a long stretch of eastern Siberian coast along the west and north.

leafy sea dragon (Phycodurus eques) / weedy sea dragon (Phyllopteryx taeniolatus) / ruby seadragon (Phyllopteryx dewysea) / (UK, dated) An ichthyosaur (Age of Dinosaurs delphine marine reptile)