Elizabeth Wood is a marine biologist who has been studying wildlife in the region for more than 20 years. She is the Coral Reef Conservation Officer for the Marine Conservation Society and is based in Ross-on-Wye, Herefordshire, UK. Michael Aw is a renowned underwater wildlife photographer with more than 25 years' experience. He has won many awards for his work and is the founding director of OceanEnvironment, a charity devoted to the conservation of marine habitats.