“At one point, a grouper the size of a refrigerator hurried under me and shimmied into a nook in the wreck,” Ward wrote. “Then I heard it: an underwater boom so strong it reverberated underwater through my body. Known as the grouper’s ’bark,’ the fish make these aggressive sounds with a muscle in their swim bladders as a form of communication during the spawning event. Call it the language of love.”
Although the reefs off the Jupiter coast host a year-round population of goliath groupers, you can expect to see 60 or more during their spawning season. In addition to Jupiter, you can find spawning aggregations in the wrecks and reefs off Hobe Sound and Stuart.
VisitFlorida.com recommends three diving businesses to check out if you decide to go: Jupiter Dive Center, Narcosis Dive Charters and Pura Vida Divers.