Solitary Islands Marine Park sweetlip ("Plectorhinchus gibbosus") occur with mulloway ("Argyrosomus japonicus"), snapper, red morwong ("Cheilodactylus fuscus"), silver trevally ("Pseudocaranx georgianus"), bream ("Acanthopagrus" spp.) and tarwhine ("Rhabdosargus sarba"). Marine turtles are common in the Park, with green turtle ("Chelonia mydas"), loggerhead turtle ("Caretta caretta"), hawksbill turtle ("Eretmochelys imbricata") and occasional sightings of leatherback turtles. Nesting green turtles and loggerhead turtles have been recorded on several beaches, with some eggs hatching successfully. Only a few species of sea snakes have been recorded in the region, including the Elegant sea snake ("Hydrophis elegans") and Yellow-bellied sea snake ("Pelamis platurus"). The only reptile recorded on Muttonbird Island
Loggerhead Key performed some of the first research on Western hemisphere mangroves and coral reefs, marine life at the Loggerhead Key coral reefs, other marine life, and also performed underwater color and black-and-white photography there. Due to safety concerns regarding the hurricane season, research only occurred in the late spring and summer months. Loggerhead Key Loggerhead Key is an uninhabited tropical island within the Dry Tortugas group of islands inside the Gulf of Mexico. At approximately 49 acres (19.8 hectares) in size, it is the largest island of the Dry Tortugas. Despite being uninhabited, the island receives visitors, such as day visitors