Taxonomy
Mainly there are five venomous snake families:
Family: Hydrophiidae
- Acalyptophis
- Aipysurus
- Astrotia
- Echiopsis
- Emydocephalus
- Ephalophis
- Hydrelaps
- Hydrophis
- Hydrophis annandalei (bighead sea snake)
- Hydrophis atriceps (black-headed seasnake)
- Hydrophis belcheri (Belcher's sea snake)
- Hydrophis bituberculatus (Peters' sea snake)
- Hydrophis brooki
- Hydrophis caerulescens (dwarf seasnake)
- Hydrophis coggeri (slender-necked seasnake)
- Hydrophis curtus (Shaw's sea snake)
- Hydrophis cyanocinctus (Asian annulated sea snake)
- Hydrophis czeblukovi (fine-spined seasnake)
- Hydrophis donaldi
- Hydrophis elegans (elegant seasnake)
- Hydrophis fasciatus (striped sea snake)
- Hydrophis gracilis (graceful small-headed seasnake)
- Hydrophis hardwickii (Hardwick's sea snake)
- Hydrophis jerdonii (Jerdon's sea snake)
- Hydrophis kingii (King's seasnake)
- Hydrophis lamberti (Lambert's sea snake)
- Hydrophis lapemoides (Persian Gulf sea snake)
- Hydrophis macdowelli (McDowells seasnake)
- Hydrophis major (olive-headed seasnake)
- Hydrophis melanocephalus
- Hydrophis obscurus (Russel's sea snake)
- Hydrophis ornatus (reef sea snake)
- Hydrophis pachycercos
- Hydrophis pacificus (Pacific seasnake)
- Hydrophis parviceps
- Hydrophis peronii (Spiny-headed seasnake)
- Hydrophis platurus (pelagic sea snake)
- Hydrophis schistosus (beaked sea snake)
- Hydrophis semperi (Lake Tall snake)
- Hydrophis spiralis (yellow sea snake)
- Hydrophis stokesii (Stokes's seasnake)
- Hydrophis stricticollis (collared sea snake)
- Hydrophis torquatus (West coast black-headed sea snake)
- Hydrophis viperinus (viperine sea snake)
- Hydrophis zweifeli (Zweifel's beaked seasnake
- Parahydrophis
- Pelamis