Some of the mangrove creatures

Cassidula snail:It has shell thick and oval, plain dark with a white rim and a white mouth at the shell opening. It breathes air (instead of through gills like most other marine snails).
It grazes on algae growing on mangrove trees and on the ground.
This snail is sometimes seen in our back mangroves, on mangrove trees. 'Auris' means 'ear' while 'felis' means 'cat'.
Mangrove mud creeper:One of the several animals that are still sold live in our wet markets.They are unique in having a third eye known as the pallial (mantle) eye (complete with lends and cornea) on the underside of the inhalant siphon.Its multispiral operculum with a central nucleus is one of the characteristics of this family.
Tree climbing/Vinegar crab:Members of this wide ranging genus are usually burrowing crabs, digging holes at the base of trees and mud lobster mounds.They are primarily leaf-eaters and are known as pests of mangrove plantations for their habit of attacking propagules. They will also scavenge meat like many other crabs. The Teochew are known to pickle this crab in black sauce with vinegar, and take it with porridge. The Thais like it salted, with the roe or simply fried whole.
They emerge at dusk to being feeding on the forest floor and have been observed climbing up trees to heights of more than six metres.
Tree-climbing crabs can be seen more easily in the day from the boardwalk at Sungei Buloh Nature Park during high tide.At this time, however, they climb only high enough to clear the water level and remain motionless on tree-trunks, leaves or boardwalk legs.The tree-climbing crab have predators like kingfishers, moniter lizards and otters.