The shells of these quite common cowries reach on average 65–80 millimetres (2.6–3.1 in) in length, with a minimum size of 43 millimetres (1.7 in) and a maximum size of 130 millimetres (5.1 in). The dorsum surface of these smooth and shiny shells is generally dark brown, with distinct large yellowish or amber dots. The edges of the dorsum and the base are completely dark brown. The aperture is long and narrow, with several dark brown teeth and clear spacing. In the living cowries the mantle is completely black, without sensorial papillae.
Shell of Mauritia mauritiana from HawaiiSubadult Mauritia mauritiana from Hawaii
This species of cowry is normally restricted to exposed habitats such as wave-washed basalt cliffs or breakwaters. Mauritia mauritiana lives in tropical low intertidal water, usually under rocks or in rocky crevices at a minimum depth of about 2 metres (6 ft 7 in), but can be found up to 50 metres (160 ft).
Schilder, F. A. and Schilder, M. 1938. Prodrome of a monograph on living Cypraeidae. Proc. malac. Soc. Lond. 23: 119-231. page(s): 184
Verdcourt, B. (1954). The cowries of the East African Coast (Kenya, Tanganyika, Zanzibar and Pemba). Journal of the East Africa Natural History Society 22(4) 96: 129-144, 17 pls.
Burgess, C.M. (1970). The Living Cowries. AS Barnes and Co, Ltd. Cranbury, New Jersey
