Small-headed Sea Snake

Hydrophis macdowelli
Small-headed Sea Snake - Marinewise © 2026 MarineWise

Quick Facts

Scientific nameHydrophis macdowelli
SizeUp to 1 m (3.2 ft)
WeightUp to 1 kg (2.2 lbs)
FamilyElapids / Elapidae

Distribution

Habitat & AU DistributionCoastal and estuarine waters, amongst sandy or muddy bottoms
Depth Range0 - 50 m (0 - 164 ft)
Small-headed Sea Snake Australian Distribution