Known to grow to the size of a small dog and live to 40 years old, the giant Tasmanian freshwater lobster is the largest of its kind in the entire world, but its home is being destroyed by sediment runoff from logging. However, there is hope – Todd Walsh the lobster man has grown up with this crayfish that gently inches its way around the northern rivers of Australia's southern-most island. This is his plea to protect a rare and remarkable creature.