Fabien Cousteau's Mission 31 will break new ground in ocean exploration and also coincides with the 50th anniversary of a monumental legacy left by his grandfather Jacques-Yves Cousteau. This will be the first time a mission of this length has taken place in the Aquarius lab, the only underwater marine habitat and lab in the world, located 9 miles off the coast of Key Largo, Fla., and operated by Florida International University.