Snake Identifier
Hook-Nosed Sea Snake (Enhydrina schistosa)
Dead Common Seasnake (Hydrophis schistosus) at Kakinada beach 01 by Adityamadhav83, via Wikimedia Commons, licensed under CC BY 4.0
Sea snakes

Hook-Nosed Sea Snake

Enhydrina schistosa

A sea snake found in murky coastal and estuarine waters across the Indo-Pacific, notable for its distinctive hooked snout.

Adult length
1.0-1.5 m (3.3-5 ft)
Range
Coastal waters of the Indo-Pacific, from the Persian Gulf to Southeast Asia and Australia

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Overview

The Hook-Nosed Sea Snake, also known as the Beaked Sea Snake, is a species inhabiting coastal and estuarine waters across a broad swath of the Indo-Pacific. It tends to occur in areas of human activity such as fishing grounds.

Its distinctively upturned, hooked snout distinguishes it from most other sea snake species.

How to identify it

  • Grayish, olive, or yellowish-green body, often with faint darker crossbands, especially in juveniles
  • Distinctive small, upturned, hook-shaped snout
  • Compressed, paddle-like tail for swimming
  • Small head not strongly distinct from the neck
  • Round pupils
  • Distinguished from other sea snakes primarily by the unique hooked snout shape

Habitat & range

Inhabits shallow coastal waters, estuaries, river mouths, and muddy or sandy substrates across the Indo-Pacific, from the Persian Gulf through South and Southeast Asia to northern Australia. Often found in areas with murky water and soft bottoms.

Behavior, diet & reproduction

Active both day and night, frequently found in areas overlapping with fishing activity due to its estuarine habitat preference. Feeds mainly on fish, particularly catfish and other bottom-dwelling species. Reproduction is viviparous, with live young born in the water.

Frequently asked questions

How can I identify it?

Look for its distinctive small, upturned, hook-shaped snout and grayish-olive coloration with faint banding.

Where does it live?

It is found in coastal waters, estuaries, and river mouths across the Indo-Pacific region.

What does it eat?

It primarily preys on fish, including catfish and other bottom-dwelling species.