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sea turtle

(Encyclopedia)sea turtle, name for several species of large marine turtles found in tropical and subtropical oceans. These turtles are modified for life in the ocean by having flipperlike forelimbs without toes and...

sea urchin

(Encyclopedia)sea urchin, spherical-shaped echinoderm with movable spines covering the body. The body wall is a firm, globose shell, or test, made of fused skeletal plates and marked by regularly arranged tubercles...

sea walnut

(Encyclopedia)sea walnut, common name for some members of the phylum Ctenophora, whose members are also called comb jellies. ...

sea whip

(Encyclopedia)sea whip, erect colony of marine animals of the phylum Cnidaria, with whiplike branches. The skeleton consists of a horny axis, overlaid with small calcareous bodies called spicules. Often beautifully...

Sivash Sea

(Encyclopedia)Sivash Sea sēväshˈ [key] or Putrid Sea, salt lagoon, c.1,000 sq mi (2,590 sq km), extending along the northeastern coast of Crimea. It is separated—except at the Genichesk Strait—from the Sea o...

Diomede Islands

(Encyclopedia)Diomede Islands dīˈəmēd [key], pair of rocky islands in Bering Strait between Alaska and Siberia. The larger island, Big Diomede, is Russian, while the smaller is part of Alaska. At 2 mi (3 km) ap...

Cook Islands

(Encyclopedia)Cook Islands, island group (2021 est. pop. 17,564), 90 sq mi (234 sq km), S Pacific, SE of Samoa; a self-governing state in free association with New Ze...

Commander Islands

(Encyclopedia)Commander Islands: see Komandorski Islands, Russia. ...

Chatham Islands

(Encyclopedia)Chatham Islands, island group, 385 sq mi (996 sq km), South Pacific, c.500 mi (800 km) E of New Zealand, to which it belongs. The two largest islands are Chatham Island, which has a large central lago...

Cocos Islands

(Encyclopedia)Cocos Islands kōˈkōs [key] or Keeling Islands, officially Territory of Cocos (Keeling) Isl...