mean sea level
51Sea otter — Taxobox name = Sea Otter status = EN trend = down status system = iucn2.3 image caption = A sea otter wraps itself in kelp in Morro Bay, California. image width = 250px regnum = Animalia phylum = Chordata subphylum = Vertebrata classis = Mammalia …
52Sea otter conservation — Modern efforts in sea otter conservation began in the early 20th century, when the sea otter was nearly extinct due to large scale commercial hunting. The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern… …
53Bering Sea and Strait — ▪ sea, Pacific Ocean Introduction Russian Beringovo More and Proliv Beringa, northernmost part of the Pacific Ocean, separating the continents of Asia and North America. To the north the Bering Sea connects with the Arctic Ocean through the …
54Trophic level — First trophic level The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun. The… …
55Mediterranean Sea — a sea surrounded by Africa, Europe, and Asia. 2400 mi. (3865 km) long; 1,145,000 sq. mi. (2,965,550 sq. km); greatest known depth 14,436 ft. (4400 m). Also called Mediterranean. * * * Inland sea enclosed by Europe, Africa, and Asia. Its west east …
56Dead Sea — For the Brian Keene book of the same name, see Dead Sea (novel). Dead Sea A view from the Israeli side looking across to Jordan Coord …
57harbours and sea works — Introduction harbour also spelled harbor any part of a body of water and the manmade structures surrounding it that sufficiently shelters a vessel from wind, waves, and currents, enabling safe anchorage or the discharge and loading of… …
58Caspian Sea — As captured by …
59Aral Sea — /ar euhl/; Russ. /u rddahl / an inland sea between Kazakhstan and Uzbekistan, E of the Caspian Sea. 26,166 sq. mi. (67,770 sq. km). Also called Lake Aral. Russian, Aralskoye More /u rddahl skeuh yeuh maw rddyeuh/. * * * Large salt lake between… …
60Aral Sea — Infobox lake image lake = Aralzee.jpg caption lake = 1989 and 2003 image bathymetry = caption bathymetry = location = Kazakhstan, Uzbekistan (Central Asia) coords = coord|45|N|60|E|type:waterbody scale:5000000|display=inline,title type =… …
