Geosesarma is genus of small freshwater or terrestrial crabs, typically less than 10 mm (0.4 in) across the carapace. These aquatic crabs live and reproduce in a wet environment with the larval stages inside the egg. They are found native to India, Southeast Asia, to the Solomon Islands and Hawaii. In the pet trade, they are called Vampire Crabs. This has nothing to do with their feeding habits, but rather with the bright, contrastingly yellow eyes of some Geosesarma species.