After your first few scuba dives, you'll soon want to explore a bit deeper. There is something exciting and mysterious about the depth that attracts divers.
The deeper you go in Scuba Diving, the more careful a diver has to be to ensure correct procedures for depression, safety stops, and deep stops are performed to prevent decompression sickness. A lot more can go wrong the deeper you go as the pressure builds up, equipment is under greater stress and there are other things that can affect a deep diver such as Nitrogen narcosis that divers need to be aware of to ensure a safe dive. The course helps divers become more aware of the planning and dangers of deep diving and allows you to dive at a depth safely.
Deep diving introduces a whole new level of excitement as it can be exhilarating. The ability to safely dive at deeper depths opens up a whole new variety of dive sites to a recreational scuba diver. Many shipwrecks or interesting dive sites are at the edges of recreational limits and can only be safely accessed by those divers who are knowledgeable and have experience diving at depths.
The Deep Diver course is to include four open 
water training dives, which are usually conducted over a period of at least two days. The minimum depth required for open water is between 60 to 100 feet, with no dive exceeding 130 feet. The instructor ensures that all dives are conducted within the no-decompression limits, with deeper dives being conducted first.
1. Planning, organization, procedures, techniques, problems, and hazards of deep diving
2. Risk factors and decompression-tables review
3. Safety stops and emergency decompression procedures
4. Special equipment, descent lines, and buoyancy-control considerations
5. Procedures for flying after diving and high-altitude diving
6. Orientation to re-compression chambers
Many shipwrecks are often found in deeper water. That’s why the PADI Deep Diver course is a natural companion to the PADI Wreck Diver course.
Other training to consider is the PADI Enriched Air Diver course on your way to PADI Master Scuba Diver.