Image caption: Nassau grouper spawning aggregation off Little Cayman, Cayman Islands. Each winter off the western tip of the Caribbean island of Little Cayman, thousands of endangered Nassau grouper ...

ST. PETERSBURG, Fla.— The National Marine Fisheries Service announced critical habitat designations today for the threatened Nassau grouper. The agency’s final rule protects more than 900 square miles ...

Groupers produce distinct sounds associated with courtship, territoriality or reproduction. An autonomous mobile wave glider and passive acoustics were deployed to survey two marine protected ...

Nassau grouper spawning aggregation off Little Cayman, Cayman Islands. Males release sperm around a female in a spawning burst up from the reef. Credit: Jason Belport (Grouper Moon Project) ...

Nassau groupers are solitary most of the year but come together for reproduction. When they come together to spawn, they use different signals to communicate with each other.

The grouper pulled the baggie with the lionfish inside from the diver’s hand three times. The grouper didn’t know the diver intended to feed it.

CLOSED SEASONS: Greater amberjack; gray triggerfish; gag, red, goliath & Nassau grouper in state/federal waters. Federal for-hire, red snapper permit holders.

Nassau grouper typically spawn for multiple nights in a row, so the team went back and repeated the same process the very next night, this time shadowing the floating patch of eggs for 36 hours.