The Sahul reef snake, otherwise known as the short-nosed sea snake, is a critically endangered sea snake whose habitat is mostly contained in a small area off the coast of North Western Australia. This snake, whose scientific name is Aipysurus apraefrontalis, derives its name from the fact that it has a small head and a short, pointed snout. The Sahul reef snake prefers sandy areas with sparse coral and can live up to 10 years in the wild. It has so far only been found within the area of two reefs—Ashmore and Hibernia.

While this snake was once relatively abundant up until the 1990s, its numbers have dwindled so much that no individuals have been recorded in surveys since 2000. While the reasons for this snake’s disappearance within its habitat are unknown, it has been hypothesized that severe coral bleaching and degradation may be a major culprit.