This project was the fourth year of a reproductive and population biology study using three commercially valuable species of sea cucumbers to support the development of a sustainable fishery for Micronesia. The objective was to develop the methodology to raise larvae through to the juvenile stage.  The results of the previous three years' research led to the conclusion that successful management of the sea cucumber resource would be greatly enhanced by the ability to cultivate the economically valuable species.   As the research progressed, it became evident that larval rearing was the most problematic aspect of the project.  Prior research allowed researchers to accurately predict spawning events, collect gametes, fertilize eggs, and cultivate larvae.  The ability to raise sea cucumbers through a complete life cycle was hypothesized to depend on larval nutrition and/or specific metamorphic inducers/substratum characteristics.