An ever-growing demand for fresh seafood has pushed wild stocks around the world to the brink. Aquaculture is one alternative to wild-caught fish.

In the deep waters off Florida’s Atlantic coast grow magnificent structures, capable of reaching 300 feet in height. These are the corals of the deep sea.

NOAA’s Aquarius Reef Base is the only undersea research station operating in the world today where aquanauts carry out missions while living and working on the seafloor.

At a time when large fish are rapidly disappearing from the world's oceans, one giant is making a comeback in Florida - the Goliath Grouper.