Mangroves

In the mangroves all sorts of things go on. Either the crab eats the mangroves

and their poo turns it into mud. 

guess what? you can pick off a leaf and lick the back of it and it tastes like salt.

It's because all the salt in the mud comes through the mangrove and into the leaves. 

Mangroves have snorkels. This is their roots and they use them to breath.