It preys upon moray eels and various fish that live on the seafloor, up to 110 cm (3.6 feet) in size.

A. duboisii is viviparous, giving birth to live young rather than laying eggs.

[9] The fangs are 1.8 mm long, which are relatively short for a snake, and the venom yield is 0.43 mg.[10] Aipysurus duboisii is a crepuscular species, meaning that it is most active at dawn and dusk.

The head is slightly wider than the neck with nostrils on its upper part and nasals contacting each other.

Rabbits are about twice as sensitive to sea snake venom as mice, and fish and frogs are even more susceptible.