The Net of death...The blue waters around Isla Roca Partida are a paradise for divers - but they can also be a deathtrap for helpless sea creatures. In their latest SOS adventure, twins Alena and Tyler Worthy - along with their friend Xochitl - track a pair of magnificent giant manta rays from Mexico's Sea of Cortez to the islands off the coast of Baja California. Save Our Seas Foundation satellites have spotted a deadly drift net near one of the islands and the mantas are heading straight for it. The team will need all their courage, ingenuity, intelligence, and technology - plus help from a very surprising source if they hope to save the mantas - and themselves.