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Mangrove clams, known as mangrove oysters or mud oysters. Are a group of bivalve mollusks
They inhabit intertidal zones. In tropical and subtropical regions of the oceans.

There are several species of mangrove clams, found in different parts of the world, and, that were probably very important to survival

They have adapted to live in the challenging and dynamic environments. During high tide, they are submerged in water. And, low tide, they are exposed to air
During this time, they burrow into muddy substrate. To avoid desiccation, and maintain moisture. Using their strong foot holds. It is a preserved life form dating back many tens of thousands of years.

Mangrove clams are harvested for human consumption, and they are still considered a delicacy in some buisinesses However, overharvesting can have negative impacts
Like with less food for birds, crabs and fish. And, as filter feeders, because they remove organic particles and algae from the water. It is crucial to manage them for harvesting, and to positively manage the mangrove ecosystem.

Bibliography:
The Population of Mangrove Clam ( Polymesoda expansa ) in The Panikel Village, Segara Anakan, Cilacap Webpage

Hamli, Hadi & Rahim, A. & Idris, Mohd Hanafi & Kamal, Abu Hena & King, Wong. (2015). Morphometric variation among three local mangrove clam species of Corbiculidae. Songklanakarin Journal of Science and Technology. 37. 15-20.

Yahya, Nurulafifah & Idris, Izwandy & Rosli, Noor Shahida & Bachok, Zainudin. (2018). Population dynamics of mangrove clam, Geloina expansa (Mousson, 1849) (Mollusca, Bivalvia) in a Malaysian mangrove system of South China Sea. Journal of Yahya, Nurulafifah & Idris, Izwandy & Rosli, Noor Shahida & Bachok, Zainudin. (2018). Population dynamics of mangrove clam, Geloina expansa (Mousson, 1849) (Mollusca, Bivalvia) in a Malaysian mangrove system of South China Sea. Journal of Sustainability Science and Management. 13