Marine biologist Dean Fessler joined the Shark Research Institute in 1991. Since then he has worked bull and Caribbean reef sharks in the Bahamas, sandtiger sharks in North Carolina, white sharks in South Africa, and led numerous expeditions studying hammerhead and whale sharks in the Sea of Cortez and Caribbean. As Education Director of SRI for two decades, he worked extensively with scientists from other institutions, underwater photographers, documentary filmmakers and the media. A long-time member of the famed Explorers Club he is a mentor to the Young Explorers.