In an ethnically stratified work force, Japanese, South Sea Islander, Torres Strait Islander and Aboriginal divers brought up from the sea floor the shell that produced mother-of-pearl, and sometimes pearls. Many men died at this dangerous work. < p/> This was an industry that could have given the indigenous peoples of Torres Strait an occupation that preserved their identity and independence. Yet in spite of a co-operative lugger scheme that operated fairly successfully in the early twentieth century, a real independence was not achieved. And a resource that could have been conserved by small-scale indigenous harvesting was depleted time and again by the colonial practices of resource-raiding and mass extraction. < p/> Regina Ganter charts the progress of pearl-shelling from its heyday through its several crises resulting from overfishing to its present cautious management. The book is greatly enhanced by the oral testimony of divers and boat-owners.