Driven by a need to address the issues surrounding the global extinction of ocean habitat and wildlife, Paul Watson founded the Sea Shepherd Conservation Society in 1977 to take the battle over driftnetting and whale hunting to the high seas. Earth Warrior describes David Morris's journey with Watson on an anti-driftnet campaign in the North Pacific, where the author encounters action and adventure and gets a close-up view of Watson, both as a person and as one of the world's most committed environmentalists.