Mangroves swamps exist at the border between fresh and salt water areas. It is mostly found in tropical and sub tropical coastal areas. The Indian Ocean, Mexico, Southern Asia and throughout the Caribbean. Mangroves grow in intertidal areas. Mangroves are really beneficial and a great gift of nature. It provides the feeding grounds for birds and crocodiles. It also provides organic material for food and medicines. Mangroves also act as shelter from hurricane damage. Algae and seaweeds grow in swamps. Crabs, shrimps, snail are also found in short when you sail by ship or cruise, you may witness the clusters of Mangroves at the short border between fresh and salt water areas it also sustain numerous species like worms oysters and many invertebrates.