Dr. Joel (Jody) Martin is a marine biologist who works as the Curator of Crustacea and Chief of the Division of Invertebrate Studies at the Natural History Museum of Los Angeles County. He is also an ordained elder in the Presbyterian Church USA, where he works with the high school youth ministry and teaches The Spirituality of Fly Fishing: An Introduction as part of the men's ministry program. An avid fly fisherman and a life member of Trout Unlimited, he is also a member of the Sierra Pacific Fly Fishers club and volunteers for Casting for Recovery and Project Healing Waters Fly Fishing. His previous books include The Prism and the Rainbow (Johns Hopkins University Press), Decapod Crustacean Phylogenetics (CRC Press), and Atlas of Crustacean Larvae (Johns Hopkins University Press).