Mangrove safari boats stop for tourists to visit a fish farm and handle horseshoe crabs, Langkawi, Malaysia, Southeast Asia, Asia

Adult flame-backed fiddler crab (Tubuca flammulain), Porosus Creek, Frederick Harbor, Kimberley, Western Australia, Australia, Pacific

Great blue spotted mudskipper (Boleophthalmus pectinirostris), Mangrove forest, Hong Kong, China, Asia

Mangrove crab (Goniopsis cruentata), Mangue Seco, Bahia, Brazil, South America

Crab hunter at a mangrove on the delta of Parnaiba river, Piaui, Brazil, South America

Mangrove crabs waving claws as part of territorial and courtship behaviors, Caravelas, Bahia, Brazil, South America

Mangrove crab (Ucides cordatus), Parnaiba river delta, Parnaiba, Piaui, Brazil, South America

[DC] Indonesia, Fiddler crab (Uca) in mangrove forest.