Whether purpose-sunk as an artificial reef for scuba divers, or lost as the result of an accident, wrecks are fascinating windows to the past. Ships, airplanes and even cars are fascinating to explore and usually teem with aquatic life. Each wreck dive offers a chance for discovery, potentially unlocking a mystery or spying something others have missed. The Wreck Diver Specialty course is popular because it offers rewarding adventures while observing responsible wreck diving practices. Wreck diving can be one of the most exciting aspects of sport diving, however every effort must be made to maximize safe diving techniques. The course will discuss the equipment and techniques commonly employed while wreck diving. This course may be taught as a non-penetration, 2 dives required, or as a limited-penetration course, requiring 3 dives. Limited-penetration is defined as a swim through or within the ambient light of entry point.