The anomalous sea snake (Hydrophis anomalus) is a species of sea snake. Its distribution includes the South Chinese Sea (Malaysia, Gulf of Thailand), and the Indian Ocean (Sumatra, Java, Borneo).
References
Schmidt, Philipp (1852). "Beiträge zur ferneren Kenntniss der Meerschlangen". Abh. Nat. Ver. Hamburg 2(2): 69-86