Four test crew members entered DEEP’s Vanguard habitat in the Florida Keys for a several-day seabed trial, marking the company’s first live test of sustained underwater habitation.
At 17 meters depth, the mission will check living conditions and operating systems while researchers conduct surveys meant to show whether science can be done during long stays underwater.
Vanguard uses saturation-diving principles: crew arrive under ambient pressure, the interior is slowly decompressed for habitation, and a moon pool lets them work outside for hours longer than standard scuba permits.
Surface buoy systems supply power, air, freshwater and satellite-linked communications, while DEEP says the habitat could support real-time analysis of deep-sea samples before pressure changes alter them.
The trial is a first step toward semi-permanent habitats across continental shelves, with DEEP also eyeing industrial, defense and eventually public uses beyond research.
How does a permanent human presence impact the very marine ecosystem it is designed to study?
With habitats planned for the continental shelf, what new laws will govern life on the ocean floor?
Could advanced robotics make these risky human habitats obsolete before they become widespread?
Vanguard Deployed: Transforming U.S. Ocean Research with the First Subsea Human Habitat Since 1986
Overview
In July 2026, DEEP successfully installed its pilot subsea human habitat, Vanguard, at Tennessee Reef in the Florida Keys National Marine Sanctuary. This marks the first open-ocean subsea human habitat in the United States in 40 years and signals a new era for marine science. Originally started as the 'Sentinel' project in the UK in 2023, Vanguard's construction and deployment moved to Florida in 2025, following DEEP's $100 million expansion into the U.S. The main goal of Vanguard is to enable continuous human presence and extended research missions in the ocean, overcoming the limitations of traditional dive methods.