Invertebrates Records from the Hadhramout Coast, Gulf of Aden, Yemen

During our research in the Hadhramout coast, the Gulf of Aden, six invertebrate’s species were recorded for first time in this region. Review of previous publications shows that these species from different families were not previously reported in the Gulf. The species identified include two gastropods: Murex scolopax (Muricidae) and Tibia insulaechorab (Rostellariidae), one bivalve: Pinna bicolor (Pinnidae), three crustaceans: Anchistus custos (Palaemonidae), Gonodactylus smithii (Gonodactylidae), and Calappa dumortieri (Calappidae). This paper describes the detailed characteristics of each species.