Second Phase, the combat diving phase, lasts seven weeks. This phase introduces underwater skills that are unique to Navy SEALs. During this phase, candidates become basic combat swimmers and learn open and closed-circuit diving.
Successful Second Phase candidates demonstrate a high level of comfort in the water and the ability to perform in stressful and often uncomfortable environments. Candidates who are not completely comfortable in the water often struggle to succeed.
Emphasis is placed on long-distance underwater dives with the goal of training students to become basic combat divers, using swimming and diving techniques as a means of transportation from their launch point to their combat objective. This is what separates SEALs from all other US special operations forces.
Courtesy of Navy SEAL & SWCC Scout Team