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polar bear

(Encyclopedia)polar bear, large white bear, Ursus maritimus, formerly Thalarctos maritimus, of the coasts of arctic North America, Asia, and Europe. Polar bears usually live on drifting pack ice, but sometimes wand...

North Channel

(Encyclopedia)North Channel, strait, c.75 mi (120 km) long, between Northern Ireland and Scotland, connecting the Irish Sea with the Atlantic Ocean. It is 13 mi (21 km) across at its narrowest point. ...

Saint George's Channel

(Encyclopedia)Saint George's Channel, strait, c.100 mi (160 km) long and 50 to 95 mi (80–153 km) wide, linking the Atlantic Ocean and the Irish Sea. It separates SE Ireland from Wales. ...

sediment

(Encyclopedia)sediment, mineral or organic particles that are deposited by the action of wind, water, or glacial ice. These sediments can eventually form sedimentary rocks (see rock). Sediments form sedimentary ...

Arguello, Point

(Encyclopedia)Arguello, Point ärgwēlˈō [key], promontory, SW Calif., extending W into the Pacific Ocean. A U.S. navy missile-launching complex is nearby. ...

Alexander Bay

(Encyclopedia)Alexander Bay, town, part of the Richtersveld local municipality, Northern Cape prov., NW South Africa, where the Orange River enters the Atlantic Ocean. Especially rich alluvial diamond deposits were...

Denmark Strait

(Encyclopedia)Denmark Strait, passage, c.300 mi (480 km) long and 180 mi (290 km) wide at the narrowest point, between Greenland and Iceland. The cold E Greenland current passes through the strait and carries icebe...

Galway Bay

(Encyclopedia)Galway Bay, inlet of the Atlantic Ocean, 30 mi (48 km) long, W Republic of Ireland, in counties Galway and Clare. The Aran Islands protect its entrance. Numerous islands dot the Galway Bay, which rece...

whale

(Encyclopedia)whale, aquatic mammal of the order Cetacea, found in all oceans of the world. Members of this order vary greatly in size and include the largest animals that have ever lived. Cetaceans never leave the...

loon

(Encyclopedia)loon, common name for migratory aquatic birds found in fresh- and saltwater in the colder parts of the Northern Hemisphere. Its strange, laughing call carries for great distances. Like the grebes, loo...