LYCOS RETRIEVER 
Biomes: Water
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The coasts of oceans are separate biomes. There are rocky, sandy, stony and muddy coasts. Rocky coasts often have tide pools, areas where water is trapped when the tide goes out. Heat from the sun warms the tide pools until the tide returns. These warm pools are filled with wildlife like seaweed, sponges, starfish, sea urchins, chitons, snails, lichens, limpets, kelp, sea stars, shellfish, crabs, and minnows.
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Freshwater biomes have suffered mainly from pollution. Runoff containing fertilizer and other wastes and industrial dumpings enter into rivers, ponds, and lakes and tend to promote abnormally rapid algae growth. When these algae die, dead organic matter accumulates in the water. This makes the water unusable and it kills many of the organisms living in the habitat. Stricter laws have helped to slow down this thoughtless pollution.
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Bogs, swamps, and marshes are wetland biomes. All wetland biomes have waterlogged soil. Bogs and swamps are flooded, but a marsh is wet only part of the year. Some wetlands are flooded with salty ocean water; others are covered with fresh water from rivers and lakes.
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Where lotic biomes are concerned, the greatest variables involve the strength of the flow, including its quantity, velocity, and seasonal variations. These characteristics influence other aspects of the ecosystem: for example, if water flows calmly and slowly, the bottom tends to gather silt. This provides a habitat for certain small species, such as the crustacean, known variously as a crayfish, crawfish, or crawdaddy.
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Tundra –Tundra is the coldest of all the biomes and covers about one fifth of the Earth's land surface. It has freezing cold temperatures and very little liquid water. There are two different types of Tundra:
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Marine biomes are generally distinguished by the depth of the water and whether there is a substrate on which organisms can attach. Important marine biomes include oceans, coral reefs, and estuaries. The ocean biome, the largest of all of the earth's biomes, can be divided into several zones including the shore/intertidal zone, the pelagic zone, the benthic zone, and the abyssal zone.
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