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Marine Corps, United States

(Encyclopedia)Marine Corps, United States, military corps that forms a separate service within the U.S. Dept. of the Navy. The commandant of the Marine Corps is a member of the Joint Chiefs of Staff. During conflic...

United States Merchant Marine Academy

(Encyclopedia)United States Merchant Marine Academy, at Kings Point, N.Y.; for the training of merchant marine officers; established 1936, opened 1943. The academy became coeducational in 1974. Candidates must be b...

Mariana Trench Marine National Monument

(Encyclopedia)Mariana Trench Marine National Monument: see under Mariana Trench. ...

Northeast Canyons and Seamounts Marine National Monument

(Encyclopedia)Northeast Canyons and Seamounts Marine National Monument, 4,913 sq mi (12,725 sq km), NW Atlantic Ocean, 130 mi (210 km) off the coast of Cape Cod; est. 2016. The monument is divided into two areas; o...

Pacific Remote Islands Marine National Monument

(Encyclopedia)Pacific Remote Islands Marine National Monument, c.490,000 sq mi (1,260,000 sq km), central Pacific Ocean; est. 2009. The monument comprises the waters and reefs surrounding seven islands and atolls, ...

nekton

(Encyclopedia)nekton: see marine biology.

plankton

(Encyclopedia)plankton: see marine biology.

benthos

(Encyclopedia)benthos: see marine biology.

zooplankton

(Encyclopedia)zooplankton: see marine biology. ...

gills, in biology

(Encyclopedia)CE5 Gills of a fish: Side view (A) and ventral view (B) gills, external respiratory organs of most aquatic animals. In fishes the gills are located in gill chambers at the rear of the mouth (phary...