Aquatic biomes are defined as the areas of ocean and other water which have similar climatic condition on the Earth. Aquatic biomes are of two major regions marine and freshwater. Freshwater biome consists of the lakes, ponds, rivers, streams, and wetlands. The marine regions include oceans, coral reefs and estuaries. Lotic forms includes streams and rivers. Lotic refers to flowing water, from the Latin lotus, washed. Lotic ecosystems can be contrasted with lentic ecosystems, which involve relatively still terrestrial waters such as lakes and ponds.