I have 35 years of experience and specialize in the field of marine pollution with specific knowledge in the areas of persistent pollution, embryonic development and emerging pollutants. I have published on such topics as sperm sensitivity to pollutants, cellular defenses against pollutants, and synthetic fragrances and perfluorocarbons. I have testified on sea urchin fertilization and sperm bioassay, bispenol A and development. I am an expert in reproductive biology, initially mechanisms of fertilization and recently defenses of embryos against environmental challenges, such as man-made chemicals.