Burrowing Shore Crab

Leptograpsodes octodentatus

The Burrowing Shore Crab, Leptograpsodes octodentatus, is a unique crustacean found along the southern coastlines of Australia, including Victoria, Tasmania, South Australia, and Western Australia up to the Abrolhos Islands. This crab is easily recognized by its oval-shaped carapace, which measures between 60 to 70 mm across. Its carapace displays a variety of colors, ranging from grey and yellow to mottled green and brown, with some even showing purple and yellow hues. Notably, the sides of its carapace feature four pairs of teeth, though the fourth pair is quite small. A distinctive behavior of this species is its ability to produce sound through stridulation. The Burrowing Shore Crab inhabits shallow burrows above the high tide line, preferring areas near fresh or brackish water but never straying far from the shore. It is primarily nocturnal, emerging at night to scavenge on rotting vegetation and animal debris. During the summer months of December and January, the species spawns, adding to its life cycle along the Australian seashores. Divers encountering this crab may find it burrowed in sandy or muddy substrates along the shore. While the IUCN conservation status for this species is not evaluated, it is recorded at numerous dive sites.