Various shapes of rostrals of sea snakes of the genus Hydrophis in the Persian Gulf and Gulf of Oman: a tip of rostral decurved and pointed (beaked-shaped) b and c tip of rostral tridentate d tip of rostral unidentate.

  Part of: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164.