page_title: Terrestrial crab
section_title: Ecology
hierarchical_section_title: Terrestrial crab / Ecology
caption_attribution_description: English: As they are found so many, you must watch your way while cycling or walking and let land crab cross safely. This road sign was in silhouette Island -Seychelles This is an image with the theme "Africa on the Move or Transport" from: Seychelles
context_page_description: A number of lineages of crabs have evolved to live predominantly on land. Examples of terrestrial crabs are found in the families Gecarcinidae and Gecarcinucidae, as well as in selected genera from other families, such as Sesarma, although the term "land crab" is often used to mean solely the family Gecarcinidae.
context_section_description: Terrestrial crabs have often evolved from freshwater crabs, since the physiological changes needed for living in fresh water are preadaptations for terrestrial living. On some oceanic islands, terrestrial crabs occupy the top of the energy pyramid.
caption: Land crab warning road sign in Seychelles
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