Over 90% of the large fish in the ocean have been fished out. Thankfully, there are still a few remote places where the last remaining giants of the ocean thrive. Lying 550 km off the west coast of Costa Rica, Cocos Island is home to one of the richest marine habitats on Earth. The Water Brothers join a research expedition to this UNESCO World Heritage site to dive with the giants of Cocos Island and learn why it is so important for the ocean to have protected and thriving hotspots. Join the Brothers as they take viewers on an incredible journey.