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Turtles Section

Turtles

Turtles are everywhere in and around the Dry Tortugas National Park. Named “Las Tortugas” by Ponce de Leon in 1513, this scattering of small sand and coral islands approximately 70 miles west of Key West, Florida, are famous for the abundance of sea turtles that annually nest on them. Some say that sea turtles are today’s only living relics of the prehistoric past. Loggerhead, Hawksbill, and Green turtles sometimes are seen floating in the sea on the trip between Key West and the Dry Tortugas National Park.

*Endangered Species Act (ESA)

sea turtle nesting Section

Sea turtle nesting tracks in the sand in the Dry Tortugas sea turtle nesting Tablet sea turtle nesting Mobile
sea turtle nesting

The Dry Tortugas National Park is the most active turtle nesting site in the Florida Keys. Park Service biologists have been monitoring sea turtle nesting activity within park boundaries since 1980. They survey the park’s seven islands daily throughout the nesting season and document the presence of turtle tracks or “crawl.” When researchers find a specially-shaped mound of sand on the beach, they know it is a nest. Each nest is marked and recorded. Forty-five days later the nest is checked for signs of hatchlings. Three days later, researchers evacuate the nest, release the trapped hatchlings, and record the number of eggs. Over 2,330 Loggerhead and Green turtle crawls have occurred during the last four seasons on only three miles of beach!

The five species of sea turtles found in the Dry Tortugas region are Green, Loggerhead, Kemp’s Ridley, Hawksbill, and Leatherback. The Dry Tortugas area is the most productive nesting region for the Green and Loggerhead turtles in the entire Florida Keys. All five species were once more abundant; now all five species are listed on the Endangered Species Act.

The Green Turtle population in the Caribbean basin before the Industrial Revolution was around 660,000,000. Today, the population is only in the ten’s of thousands.

Kemp’s Ridley Sea Turtle Section

Sea turtle swimming underwater in the Dry Tortugas Kemp’s Ridley Sea Turtle Tablet
Kemp’s Ridley Sea Turtle

(Lepidochelys kempi)
Smallest of the sea turtles. Adults do not exceed 30 inches in shell length and range in weight from 80-100 pounds. The broadly oval shaped shell is usually olive gray, but young are black. Found in the coastal waters and bays of the Gulf of Mexico and Atlantic where they forage predominantly on crabs. Only a few hundred females nest in the state of Tamaulipas, Mexico each year. ESA Status: ENDANGERED

Hawksbill Sea Turtle Section

A hawksbill sea turtle swimming a reef in the Dry Tortugas with a school of fish in the background Hawksbill Sea Turtle Tablet
Hawksbill Sea Turtle

(Eretmochelys imbricata)
Small to medium sea turtles with a very attractively colored shell of thick, overlapping scales…the source of “tortoise shell.” Has distinct hawk-like beak. Adults range in size from 30-36 inches shell length and weigh 100-200 pounds. A shy tropical reef dwelling species where it forages primarily on sponges. ESA Status: ENDANGERED

Loggerhead Sea Turtle Section

A loggerhead sea turtle swimming the reef in the Dry Tortugas Loggerhead Sea Turtle Tablet
Loggerhead Sea Turtle

(Caretta caretta)
A large reddish-brown sea turtle with a disproportionately large head. Adults range in size from 33-40 inches shell length and weigh 150-400 pounds. This is the most common sea turtle encountered in the southeastern United States. Frequently observed around wrecks, underwater structure, and reefs where it forages on a variety of crabs, jellyfish, and mollusks. ESA Status: THREATENED

Green Sea Turtle Section

A laggerhead turtle swimming a reef in the Dry Tortugas Green Sea Turtle Tablet
Green Sea Turtle

(Chelonia mydas)
For hundreds of years Green turtles have provided fresh meat for mariners, pirates, and peoples living in the Florida Keys, Cuba, and all around the Gulf Coast. At one time turtling was a big business for Key Westers, with a cannery brewing popular green turtle soup that was shipped out to northern cities.

A medium to large brownish sea turtle with a radiating or mottled pattern of markings on the shell. The head is small in comparison to other sea turtles and the biting edge of the lower jaw is serrated. Adult shell lengths range in size from 36-43 inches and weights average 200-300 pounds. Primarily a tropical herbivorous species, the juveniles frequently occur in Florida waters, especially in areas abundant in sea grasses. ESA Status: ENDANGERED for Florida and east Pacific breeding populations; THREATENED everywhere else.

Leatherback Sea Turtle Section

A baby sea turtle headed for the ocean in the Dry Tortugas Leatherback Sea Turtle Tablet
Leatherback Sea Turtle

(Dermochelys coriacea)
The largest sea turtle. Can attain a shell length of six feet and weights of 1,400 pounds. Black with white blotches, the shell lacks scales and is covered by a firm, rubbery skin with seven longitudinal ridges or keels. A highly migratory turtle that nests in the tropics and ranges as far north as Canada and the northern Pacific. Feeds primarily on jellyfish. ESA Status: ENDANGERED

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