A successful explorer, marine biologist and writer, Monty Halls has led numerous expeditions and projects throughout the world, including three circumnavigations of the earth seeking out the greatest encounters in the oceans. His television credits include presenting Channel 4's Journey to the Centre of the Earth (the science behind Jules Verne's novel), Discovery's Rebuilding the Past (an attempt to recreate an Iron Age settlement) and Five's Great Ocean Adventures, for which he was also the author of the accompanying book. Monty operates the adventure travel company, Full Circle Expeditions, and is also a leading motivational speaker.