L. schistorhyncha grows to a total length (including tail) of up to 1 m (3.3 ft), and is highly venomous, making it one of the most potentially dangerous creatures on the planet. It has a fin-like tail, helping it to swim better.
During mating, the male katuali wraps itself around the female until she is fertilized. Because the eggs would not survive in water, the female swims into a sea cave to lay the eggs in dry crevices. These eggs take six months to hatch, and then the infant snakes make their way to the ocean.
