Goliath groupers gather annually in spawning aggregations at offshore reefs and wreck sites throughout the Caribbean and parts of Florida. During filming for Americas Underwater Treasures, a twohour PBS special documenting all the U.S. National Marine Sanctuaries as part of the Ocean Adventures series, JeanMichel, Fabien and Celine Cousteau witness a congregation of these enormous fish. Dive under the waves with them in this short film and discover the goliath grouper.