Snake Identifier
Spectacled Sea Snake (Hydrophis lapemoides)
Hydrophis lapemoides 202729929 by purperlibel, via Wikimedia Commons, licensed under CC BY-SA 4.0
Sea snakes

Spectacled Sea Snake

Hydrophis lapemoides

A slender, pale-banded sea snake named for the ring-like markings around its eyes, inhabiting shallow tropical seas of the Indian Ocean and western Pacific.

Venomous?
Venomous
Adult length
0.8-1.2 m (2.6-4 ft)
Range
Persian Gulf, Arabian Sea, and Indo-Pacific coastal waters

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Overview

The spectacled sea snake is a fully marine elapid found across warm coastal waters from the Persian Gulf through South and Southeast Asia. It is named for the distinctive pale ring encircling each eye, reminiscent of spectacles.

As a member of the highly diverse Hydrophis genus, it shares the fully aquatic lifestyle, paddle tail, and neurotoxic venom typical of true sea snakes, spending its entire life in the water and rarely if ever coming ashore.

How to identify it

  • Slender body with a moderately small head
  • Pale grey to yellowish-olive ground color with dark grey-black bands encircling the body
  • Bands are typically wider on the back and taper toward the belly
  • Distinctive pale ring or "spectacle" marking around each eye, giving the species its common name
  • Smooth, overlapping body scales
  • Laterally flattened, paddle-shaped tail for swimming
  • Adults reach approximately 0.8-1.2 m in length

Habitat & range

Inhabits shallow coastal waters, bays, and estuaries over sandy or muddy substrates, typically at depths less than 30 m. Distribution spans the Persian Gulf, Arabian Sea, coastal India, and parts of Southeast Asia. Often found near river mouths and in areas with high productivity that support abundant small fish prey.

Behavior, diet & reproduction

Active both day and night, though often more visible during crepuscular hours. Feeds primarily on small fish, using chemosensory and visual cues to locate prey in murky coastal water before delivering a venomous bite. Reproduction is ovoviviparous, with females bearing live young at sea in small litters.

Frequently asked questions

Is the spectacled sea snake dangerous?

It is venomous and capable of delivering a neurotoxic bite, though bites to humans are uncommon.

Why is it called the spectacled sea snake?

It has a pale ring around each eye resembling a pair of spectacles.

Where does the spectacled sea snake live?

It lives in shallow coastal waters from the Persian Gulf across South and Southeast Asia.

How big does it get?

Adults typically measure 0.8-1.2 m (2.6-4 ft).