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Hydrophiinae is a 
subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...
of venomous snake
Venomous snakes are Species (biology), species of the Suborder (biology), suborder Snake, Serpentes that are capable of producing Snake venom, venom, which they use for killing prey, for defense, and to assist with digestion of their prey. The v ...
s in the family Elapidae. It contains most sea snakes
Sea snakes, or coral reef snakes, are elapid snakes that inhabit marine environments for most or all of their lives. They belong to two subfamilies, Hydrophiinae and Laticaudinae. Hydrophiinae also includes Australasian terrestrial snakes, where ...
and many genera of venomous land snakes found in Australasia, such as the taipan
Taipans are snakes of the genus ''Oxyuranus'' in the elapid family. They are large, fast-moving, highly venomous, and endemic to Australia and New Guinea. Three species are recognised, one of which, the coastal taipan, has two subspecies. Taipan ...
s (''Oxyuranus''), tiger snakes (''Notechis''), brown snakes (''Pseudonaja'') and death adders (''Acanthophis'').
Genera
According to the Reptile Database, Hydrophiinae contains the following 38 genera: (Sea snakes are marked with asterisks.)References
{{Taxonbar, from=Q460286 Elapidae Venomous snakes