Estuarine Sea Snake

The estuarine sea snake is well adapted to brackish, low-visibility waters at the mouths of rivers, a habitat that many other sea snakes avoid. This tolerance for reduced salinity allows it to range into areas with heavy freshwater influence.

It is found across a broad swath of the Indo-West Pacific, from the Indian subcontinent through Southeast Asia, generally in turbid coastal zones rather than clear reef waters.

• Dull grayish or olive body coloration suited to murky water
• Faint banding or blotching, often obscured by mud-toned coloration
• Small head, not sharply distinct from the neck
• Laterally flattened, paddle-like tail
• Distinguished from reef-associated sea snakes by its consistent association with turbid estuarine habitats

Inhabits estuaries, river mouths, and turbid coastal waters with significant freshwater input. Ranges from the Indian subcontinent through Southeast Asian coastlines, generally avoiding clear offshore or reef waters.

Hunts small fish adapted to murky water, likely relying more on chemical and tactile cues than vision given low water clarity. Fully aquatic, giving birth to live young. Tolerates fluctuating salinity better than many other sea snake species.