Croatan Sound CROATAN SOUND Croatan Sound features local species including red drum, Atlantic spadefish (the Aquarium logo fish), stripers, lookdown, spot and croaker. Photo: Red Drum Croatan Sound is an 8,000-gallon saltwater display, one of the largest at the Aquarium. Fish for the exhibit are collected by Aquarium staff, who fish local waters and sometimes work with commercial fishermen. Graphic panels interpret the species and the habitat typical to this low-salinity saltwater sound. SPONSORSHIP IS AVAILABLE FOR:$25,000Contact Us for Sponsorship Details