08/28/2026
We celebrate the 61st Anniversary of SEALAB II, one of the most groundbreaking achievements in underwater exploration history. On August 28, 1965, the U.S. Navy began the historic SEALAB II mission off La Jolla, California, proving that humans could live and work underwater for extended periods through saturation diving. The 45-day experiment pushed the boundaries of science, engineering, and human endurance, laying the foundation for modern commercial diving, undersea research, and deep-sea operations.
SEALAB II brought together visionary pioneers, including astronaut and aquanaut Scott Carpenter, and demonstrated that the ocean could become a workplace, not just a place to visit. The lessons learned continue to influence diving technology and underwater habitats today.
At the Man in the Sea Museum, we proudly preserve and share the legacy of the men and women whose courage and innovation opened a new frontier beneath the waves.
Happy 61st Anniversary, SEALAB II!