| Common Name | Black-headed seasnake |
| Language | English |
| Type | Vernacular |
| Official Trade Name | No |
| Rank | 2 - (Preferred common name (unique)) |
| Country | England and Wales (UK) |
| Locality | |
| Ref. | Bisby, F.A., Y.R. Roskov, T.M. Orrell, D. Nicolson, L.E. Paglinawan, N. Bailly, P.M. Kirk, T. Bourgoin and J. van Hertum (eds.), 2008 |
| Life Stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st Modifier | color pattern(s) |
| 2nd Modifier | |
| Remarks | 'snake', from Old English 'snaca', i.e., 'to crawl'. |