Ashlan and Philippe Cousteau head to Pensacola, Florida, to track down a Native American legend of pirates and lost treasure. The investigation becomes a fight for survival when their mission takes them to the dark and dangerous Escambia River.

Ashlan and Philippe Cousteau join with local experts in the hunt for clues about a missing treasure from 1554 on South Padre Island, Texas. Their mission takes them from dangerous waters to lethal quicksand in search of answers.

Philippe and Ashlan Cousteau go to Puerto Plata in the Dominican Republic to unravel a mysterious shipwreck that might have treasure on board. No one knows its name or what it was carrying, so their investigation is going to be very difficult.

Philippe and Ashlan Cousteau journey to one of the world's deadliest reefs to complete a mission that Philippe's grandfather could not. The expedition brings them face-to-face with danger, disaster and ultimately redemption.

Philippe and Ashlan Cousteau go to Dominica, a remote island where a Spanish treasure convoy wrecked with millions in treasure. Their investigation reveals clues about whether the treasure was salvaged by local tribes or remains undiscovered.

Ashlan and Philippe Cousteau head to Roatan, Honduras, to investigate rumors of a lost chest of gold still missing on the island. Their mission combines moments of incredible beauty and harrowing danger as they try to solve the mystery.

Ashlan and Philippe Cousteau arrive in St. Croix to investigate the scenic island's rich pirate history and its link to the lost treasure of a infamous pirate known as "The Buzzard."

Philippe and Ashlan Cousteau team up with the Peruvian Navy to investigate a 17th-century disaster that still haunts the country and its people.

Philippe and Ashlan Cousteau uncover new leads in the search for pirate Calico Jack's missing treasure that could be worth $250 million. Their mission reaches a stunning climax during their high-risk scuba dive beneath waves.

Philippe and Ashlan Cousteau return to the US Virgin Islands to investigate what happened to the RMS Derwent, a 19th-century paddle wheeler that vanished without a trace. Recent hurricanes have revealed clues to the boat's whereabouts.

Ashlan and Philippe Cousteau head to Puerto Rico to unlock the mystery of pirate Prince Maurice and his lost ship, The Defiance. Recent hurricanes on the island may have uncovered clues to the whereabouts of the 400-year-old shipwreck.

The Cousteaus head to the gulf coast of Florida to investigate the legend of the infamous pirate Gasparilla and reports of a local resident who claimed to have sailed with him. The mission is put in jeopardy when Ashlan suffers a serious injury.

Philippe and Ashlan Cousteau visit Belize to explore the Great Blue Hole, a stunning wonder of the world. They then head to a private island to investigate a modern-day treasure map that could reveal hidden clues to the area's pirate past.

Ashlan and Philippe Cousteau dig into rumors that the so-called "Robin Hood of Pirates" left treasure behind for his friends to find in the Dominican Republic. What they discover at the end of their mission surprises even the local experts.