I have 30 years of experience, and specialize in the field of mariculture with specific knowledge in the areas of shrimp farming, marine fish farming and offshore aquaculture. I have published on such topics as shrimp farming, marine fish farming and offshore aquaculture. I have testified on methods used to tell wild caught fish from farm-raised fish, environmental sustainability of shrimp farming and environmental impact of offshore aquaculture. I have conducted shrimp farming short courses since 1986.