Fabio Liverani / Mudskipper (Periophthalmus species) at low tide, Sabah, Borneo

Duncan Murrell / Barred mudskippers (Periophthalmus argentilineatus) in mangroves on the Forgotten Coast, Lagoons of New Caledonia: Reef Diversity and Associated Ecosystems UNESCO World Heritage Site. New Caledonia.

Magnus Lundgren / Wild Wonders of China / Bluespotted mudskippers (Boleophthalmus pectinirostris) skipping along the beach, Hong Kong Wetland Park, Hong Kong, China.

Magnus Lundgren / Wild Wonders of China / Bluespotted mudskippers (Boleophthalmus pectinirostris) on mudflat, Hong Kong Wetland Park, Hong Kong, China.

Magnus Lundgren / Wild Wonders of China / Bluespotted mudskippers (Boleophthalmus pectinirostris) skipping along the beach, Hong Kong Wetland Park, Hong Kong, China.

Konrad Wothe / Mudskippers (Oxudercinae) on coastal rocks, Lima, Peru.

Bernard Castelein / Mudskipper (Periopthalmus argentilineatus), Ifaty, Madagascar

Bernard Castelein / Mudskipper (Periopthalmus argentilineatus) Ifaty, Madagascar

Bernard Castelein / Mudskipper (Periopthalmus argentilineatus) Ifaty, Madagascar

Shibai Xiao / Blue-spotted mudskipper (Boleophthalmus pectinirosris) two males on beach displaying their colorful dorsal fins and fighting each other, Guangxi Province, China.

Edwin Giesbers / Mudskippers (Periophthalmus sp) in sand at low tide, in Mangrove habitat, Bako National Park, Sarawak, Borneo, Malaysia

Stephen Dalton / Mudskipper {Periophthalmus barbarus} close up of eyes, controlled conditions, from West Africa