Coastal wetlands are flooded periodically by tides, so that resident plants and animals spend part of the time in the water and part of the time in the air. Some of the plants and animals that live in these areas have origins as land species, such as grasses, insects, birds, and mammals. Others, such as mollusks, crabs, and fishes, come from the sea. The plants must be able to live in saltwater and in soil that tends to be waterlogged and low in oxygen. Twice a day, many of the marine animals... więcej
Salem Press Encyclopedia of Science, 2019. 5p.