Hydrophis cantoris  Hydrophis cantoris is a species of venomous sea snake found in the Indian Ocean and its seas, bays and gulfs. The specific name, "cantoris", is in honor of Danish zoologist Theodore Edward Cantor. Diagnostic characters: Head small, body long and slender anteriorly; scales on thickest part of body juxtaposed; 5-6 maxillary teeth behind fangs; 23-25 (rarely 21) scale rows around neck, 41-48 around thickest part of body (increase from neck to midbody 18-24); ventrals divided by a longitudinal fissure; prefrontal in contact with third upper labial; ventrals 404-468. Total length males , females ; tail length males , females . Indian Ocean (Bangladesh, Pakistan, India, Myanmar (= Burma), Thailand, Malaysia), Andaman Islands.