do they do?
 
 
 

Mangrove trees grow in mud in which oxygen levels are low. All living things need oxygen to survive and because the mangrove can't get much oxygen through its roots under the water it has learnt to adapt by by producing roots that stick up in the air above the mud to take in oxygen.  These roots are called pneumatophores.

Mangrove roots arae important because they make the mud stick together and stop the land from being washed away.

Mangroves also act as a filter for the water.

Mangroves provide a sheltered area for many types of animals to live in.