Figure 1:Grapsus albolineatuson the intertidal shores of Big Sisters' Island. (Photo: Gan Su Xuan)
Frequently asked question:
Q: "Can eat one or not?"
A: No. They'rere toxic💀
Llewellyn L. E. & Endean R., 1988. Toxic coral reef crabs from Australian waters. Toxicon, 26: 1085–1088.
:A and B show two of the intertidal shores of Singapore, where A is Pulau Semakau and B is Changi beach. C is the rocky shore of Labrador Park, and D is Kranji's mangrove mudflat.
Distribution in the World
Holthuis L. B., 1977. The Grapsidae, Gecarcinidae and Palicidae (Crustacea: Decapoda: Brachyura) of the Red Sea. Israel Journal of Zoology, 26: 141–192.
In general, the crab has been observed to stay above the water level at all times, even in intertidal areas