“…Their presence has been documented, for example, on the Guyana-Surinam-French Guiana coast of South America (Daniel, 1989;Prost, 1989, in England (e.g., Greensmith and Tucker, 1969), along the Chinese coast (Xitao, 1986(Xitao, , 1989Qinshang et al, 1989;Wang and Ke, 1989;Saito et al, 2000), in western Africa (Anthony, 1989), on the northern coast of Australia (Wright and Coleman, 1973;Short, 1989), on the North Island of New Zealand (Woodroffe et al, 1983), on marine and inland sea coasts of the former Soviet Union (see Shuisky, 1989, for a summary) and on the Mekong delta of southern Vietnam (e.g., Nguyen et al, 2000).…”