National Geographic Fabien Cousteau leads “aquanauts” in record-breaking undersea expedition Launched on June 1, Mission 31 is a 31-day, privately funded expedition at Florida International University’s Medina Aquarius Reef Base. The habitat lies 63 feet (19 meters) below the surface in the Florida Keys National Marine Sanctuary. Windows look out on swimming fish and deep coral reefs. The team is studying climate change, ocean acidification, […]