Daniel Heuclin / Mangrove pit viper (Trimeresurus purpureomaculatus) in tree, Bukittinggi, Sumatra.

Daniel Heuclin / Mangrove pit viper (Trimeresurus purpureomaculatus) in tree, Bukittinggi, Sumatra.

Chien Lee / Mangrove Cat Snake (Boiga dendrophila), Kuching, Sarawak, Borneo, Malaysia

Juergen Freund / Banded sea kraits (Laticauda colubrina) in roots of Mangrove tree at low tide, Mali Island, Macuata Province, Fiji, South Pacific.

Juergen Freund / Banded sea kraits (Laticauda colubrina) in roots of Mangrove tree at low tide, Mali Island, Macuata Province, Fiji, South Pacific.

Claudio Contreras / Mangrove file snake (Acrochordus granulatus) Batasan Island, Danajon Bank, Central Visayas, Philippines, April

Mark Carwardine / Mangrove / Yellow-ringed cat snake with tongue out {Boiga dendrophila} captive, from Asia

Mark Carwardine / Mangrove / Yellow-ringed cat snake aggression {Boiga dendrophila} captive, from Asia

Mark Carwardine / Mangrove / yellow-ringed cat snake with tongue out {Boiga dendrophila} captive, from Asia

Michael D. Kern / Mangrove salt marsh snake (Nerodia clarkii compressicauda) captive, from southern USA

Daniel Heuclin / Philippine mangrove snake amongst vegetation, (Boiga dendrophila divergens) controlled conditions, Luzon, Philippines

Chien Lee / Mangrove Cat Snake (Boiga dendrophila) with extended tongue, Jakarta, Java, Indonesia