Dave was described in a photography magazine in 1982 as “one of the new breed of naturalist photographers, with a commitment to conservation and the style of a photojournalist.” As co-founder of the Environmental Investigation Agency (EIA) in 1984, Dave has developed, led and won campaigns with his focused strategies, persuasive documentation, team work and sheer hard work: his photo-spreads appearing in magazines such as LIFE, The Sunday Times, BBC Wildlife and The Telegraph Magazine. Dave’s name is associated with many conservation successes including the 1989 ivory ban, subject of his first book "To Save an Elephant". Since then he has published a novel set in Borneo, "Stripped", made many TV documentaries and been awarded the Albert Schweitzer Medal for his "work in protecting elephants and dolphins" and EIA was awarded the Global 500 Roll of Honor by UNEP in 2001.