Hydrophis caerulescens
Range
Indian Ocean, South China Sea and northern Australia
Size
Up to 74cm
The dwarf sea snake is a venomous sea snake. It is bluish or grey-blue above, merging to yellowish below, with 35–58 deep bluish-black crossbands that are as wide as or wider than the gaps between them, well defined in young animals and obscure in older ones. The head is black, and juveniles may have a yellowish horseshoe mark. Adults may reach a total length of 74 cm (Wikipedia, general species account).