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marine biology

(Encyclopedia)marine biology, study of ocean plants and animals and their ecological relationships. Marine organisms may be classified (according to their mode of life) as nektonic, planktonic, or benthic. Nektonic...

polyp and medusa

(Encyclopedia)CE5 Polyp and medusa stages in the life cycle of Obelia, representative of the phylum Cnidaria polyp and medusa, names for the two body forms, one nonmotile and one typically free swimming, found ...

coast

(Encyclopedia)coast, land bordering an ocean or other large body of water. The line of contact between the land and water surfaces is called the shoreline. It fluctuates with the waves and tides. Sometimes the term...

Mauritius

(Encyclopedia)CE5 Mauritius môrĭshˈēəs, –əs [key], officially Republic of Mauritius, republic (2015 est. pop. 1,259,000), 790 sq mi (2,046 sq km), in the SW Indian Ocean. It is part of the Mascarene Isla...

Cocos Islands

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

Bougainville

(Encyclopedia)Bougainville bo͞oˈgənvĭl, Fr. bo͞ogăNvēlˈ [key], volcanic island (1990 est. pop. 154,000), c.3,880 sq mi (10,050 sq km), SW Pacific, largest in the Solomon Islands chain. With Buka and smaller...

venom

(Encyclopedia)venom or zootoxin, any of a variety of poisonous substances produced by animals. In poisonous snakes, venom is secreted in two poison glands, one on each side of the upper jaw, and enters the fang by ...

Maldives

(Encyclopedia)Maldives mălˈdēvz, –dīvz [key], Dhivehi Dhivehi Raajje, officially Republic of Maldives, republic (2015 est. pop. 418,000), 115 sq mi (298 sq km), off the coast of S Asia in the N Indian Ocean. ...

Pacific Ocean

(Encyclopedia)CE5 Pacific Ocean, largest and deepest ocean, c.70,000,000 sq mi (181,300,000 sq km), occupying about one third of the earth's surface; named by the explorer Ferdinand Magellan; the southern part i...

Indian Ocean

(Encyclopedia)Indian Ocean, third largest ocean, c.28,350,000 sq mi (73,427,000 sq km), extending from S Asia to Antarctica and from E Africa to SE Australia; it is c.4,000 mi (6,400 km) wide at the equator. It con...