Mangroves are a group of trees and shrubs that live in the coastal intertidal zone. It is amongst the most productive marine ecosystems on Earth, providing a unique habitat opportunity for many species and key goods and services for human beings.
There are at least 80 different species of mangrove trees. All of the trees grow in areas with low-oxygen soil, where slow-moving waters allow fine sediments to accumulate. Mangrove forests only grow at tropical and subtropical latitudes near the equator because they cannot withstand freezing temperatures.
Around equator, mangrove forests can be recognised from their dense tangle of roots that make trees appear to be standing on stilts above the water. This tangle roots allow trees to handle the daily tides, both low and high. Most mangrove forests get flooded at least twice per day; slow the movement of tidal waters and cause sediments to settle out of the water and build up the muddy bottom. Because of this, mangroves are unique and important.