[1][2] It is a semiterrestrial and brackish-water crab that lives on sandy beaches.

[4] Metasesarma obesum is known from the shores of the Indian and Pacific Oceans.

[5] They are occasionally found in the aquarium trade.

They require land area, hiding places such as leaf litter or driftwood, and shallow brackish/salt water.

It is omnivorous and generally peaceful to tankmates and conspecifics, however it might fight with conspecifics if it does not have enough space.