Synopsis Introduction. I. Sea Turtles: i. Tortoise, turtle or terrapin. ii. Distribution. iii. Habits. iv. Reproduction. v. Breeding habits. vi. Threats diversity. II. Sea Snakes: i. Description. ii. Sea snake or Eel? iii. Food. iv. Reproduction. v. Where are they found? vi. Venom. vii. Sea snakes: a threat to fisherfolk and divers? viii. Distribution. ix. Diversity. x. Sea snakes as food. III. An updated checklist of the marine reptiles of India (with common names). IV. Accounts of species: i. Sea Turtles: Family Dermochelyidae. 1. Dermochelys coriacea (Vandelli). Family Cheloniidae. 2. Caretta caretta (Linnaeus). 3. Chelonia mydas (Linnaeus). 4. Eretmochelys imbricata (Linnaeus). 5. Lepidochelys olivacea (Eschscholtz). ii. Sea Snakes: Family Hydrophiidae. Subfamily Hydrophiinae. 1. Astrotia Stokesii (Gray). 2. Enhydrina schistosus (Daudin). 3. Hydrophis caerulescens (Shaw). 4. Hydrophis cantoris (Gunther). 5. Hydrophis cyanocinctus Daudin. 6. Hydrophis fasciatus (Schneider). 7. Hydrophis gracilis (Shaw). 8. Hydrophis lapemoides (Gray). 9. Hydrophis mamillaris (Daudin). 10. Hydrophis nigrocinctus Daudin. 11. Hydrophis obscura Daudin.12. Hydrophis ornatus (Gray). 13. Hydrophis spiralis (Shaw). 14. Hydrophis stricticollis Gunther. 15. Kerilia jerdonii (Gray). 16. Lapemis curtus Daudin. 17. Pelamis platurus (Linnaeus). 18. Thalassophis viperina (Schmidt). Subfamily Laticaudinae. 19. Laticauda colobrina (Schneider, 1799). 20. Laticauda laticaudata (Linnaeus). Summary. References: i. Sea turtles. ii. Sea snakes. Glossary: i. Sea turtles. Sea snakes.