Mosaic Sea Snake
Hydrophis fasciatus
A slender, brightly patterned sea snake with a mosaic-like arrangement of dark blotches, found in shallow estuarine and coastal waters of Asia.
- Venomous?
- Venomous
- Adult length
- 0.8-1.2 m (2.6-4 ft)
- Range
- Coastal waters of South and Southeast Asia
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Overview
The mosaic sea snake, also called the fasciated sea snake, is a slender marine elapid found in shallow coastal and estuarine waters across South and Southeast Asia. Its name refers to the checkerboard-like arrangement of dark markings along its body.
It is venomous, using its bite to hunt small fish, but is generally regarded as timid and not prone to biting humans.
How to identify it
- Slender, elongate body
- Pale yellowish to gray ground color with dark, roughly rectangular or squarish blotches arranged in a mosaic-like pattern along the back and flanks
- Small head
- Paddle-shaped tail
- Adults typically 0.8-1.2 m
Habitat & range
Inhabits shallow coastal waters, estuaries, and river mouths over muddy or sandy substrates, ranging across the Indian subcontinent's coasts through Southeast Asia.
Behavior, diet & reproduction
Feeds mainly on small fish, particularly gobies and other bottom-dwelling species, foraging in shallow turbid waters. Reproduction is ovoviviparous, with live young born at sea.
Frequently asked questions
How is the mosaic sea snake identified?
By its slender body marked with dark, squarish blotches arranged in a mosaic-like pattern.
Is it venomous?
Yes, though it is generally timid and rarely bites humans.
Where does it live?
In shallow coastal and estuarine waters of South and Southeast Asia.
What does it eat?
Mainly small fish such as gobies found in shallow waters.
Mosaic Sea Snake guides
In-depth guides for identifying and understanding Mosaic Sea Snake.
