Ep 8. The Ship Sinkers

Artificial reefs mean big business for the tourist industry, but how are they created? Canada is a world leader in the technology needed to create these diving meccas.

National Geographic Channel follows the reef-building process as an old naval ship is meticulously cleaned of pollutants, carefully wired with explosives, and sunk to an underwater resting place. These submerged ships also provide habitats and breeding sites for innumerable marine species.