“…Charybdis natator is a portunid edible crab that is common in the Indo-Pacific, Indian Ocean, East Africa and the Red Sea (Dai and Yang, 1991;Webber, 2001). Although this species is unpopular and hardly consumed by locals, its shell can be used for chitin and chitosan production (Kanagaraj, 2007;Abo-Hashesh et al, 2017). In Egypt, studies regarding this species are scarce; Gaballa (2009, 2010) studied some aspects of its biology as well as assessing its edibility.…”