Sea turtles, sometimes called marine turtles, are reptiles of the order Testudines and of the suborder Cryptodira. The seven existing species of sea turtles are the green sea turtle, loggerhead sea turtle, Kemp's ridley sea turtle, olive ridley sea turtle, hawksbill sea turtle, flatback sea turtle, and leatherback sea turtle.
Cheloniidae is a family of typically large marine turtles that are characterised by their common traits such as, having a flat streamlined wide and rounded shell and almost paddle-like flippers for their forelimbs. The six species that make up this family are: the green sea turtle, loggerhead sea turtle, olive ridley sea turtle, hawksbill sea turtle, flatback sea turtle and the Kemp's ridley sea turtle.
The leatherback sea turtle, sometimes called the lute turtle or leathery turtle or simply the luth, is the largest of all living turtles and is the fourth-heaviest modern reptile behind three crocodilians. It is the only living species in the genus Dermochelys and family Dermochelyidae. It can easily be differentiated from other modern sea turtles by its lack of a bony shell, hence the name. Instead, its carapace is covered by skin and oily flesh.
The loggerhead sea turtle, also commonly called Caretta Caretta, is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around 90 cm (35 in) in carapace length when fully grown. The adult loggerhead sea turtle weighs approximately 135 kg (298 lb), with the largest specimens weighing in at more than 450 kg (1,000 lb). The skin ranges from yellow to brown in color, and the shell is typically reddish brown. No external differences in sex are seen until the turtle becomes an adult, the most obvious difference being the adult males have thicker tails and shorter plastrons than the females.
The green sea turtle, also known as the green turtle, black (sea) turtle or Pacific green turtle, is a species of large sea turtle of the family Cheloniidae. It is the only species in the genus Chelonia. Its range extends throughout tropical and subtropical seas around the world, with two distinct populations in the Atlantic and Pacific Oceans, but it is also found in the Indian Ocean. The common name refers to the usually green fat found beneath its carapace, not to the color of its carapace, which is olive to black.
Shell Beach, located on the Atlantic coast of Guyana in the Barima-Waini Region, near the Venezuelan border, is a nesting site for four of the eight sea turtle species - the Green, Hawksbill turtleill, Leatherback and the Olive Ridley. Shell Beach extends for approximately 145 km.
Animal migration tracking is used in wildlife biology, conservation biology, ecology, and wildlife management to study animals' behavior in the wild. One of the first techniques was bird banding, placing passive ID tags on birds legs, to identify the bird in a future catch-and-release. Radio tracking involves attaching a small radio transmitter to the animal and following the signal with a RDF receiver. Sophisticated modern techniques use satellites to track tagged animals, and GPS tags which keep a log of the animal's location. One of the many goals of animal migration research has been to determine where the animals are going; however, researchers also want to know why they are going "there". Researchers not only look at the animals' migration but also what is between the migration endpoints to determine if a species is moving to new locations based on food density, a change in water temperature, or other stimulus, and the animal's ability to adapt to these changes. Migration tracking is a vital tool in efforts to control the impact of human civilization on populations of wild animals, and prevent or mitigate the ongoing extinction of endangered species.
GPS wildlife tracking is a process whereby biologists, scientific researchers or conservation agencies can remotely observe relatively fine-scale movement or migratory patterns in a free-ranging wild animal using the Global Positioning System and optional environmental sensors or automated data-retrieval technologies such as Argos satellite uplink, mobile data telephony or GPRS and a range of analytical software tools.
Playona Acandí Fauna and Flora Sanctuary is one of eleven new national parks in Colombia. It is the home of the Cana Turtle. This park is on the Caribbean coast of the Department of Chocó. The Playon Playona Acandí Fauna and Flora Sanctuary is a strategic area for the survival of the hawksbill and leatherback turtles, the latter considered to be the world's largest sea turtle.
The Sea Turtle Restoration Project (STRP), founded in 1989, is a project of Turtle Island Restoration Network (TIRN), a United States 501(c)(3) nonprofit environmental organization with a goal of protecting endangered sea turtles from human-caused threats at nesting beaches and in the ocean.
Dr. Chan Eng Heng, a retired professor from Universiti Malaysia Terengganu, is a turtle conservationist who has been recognised by the United Nations Environment Program for her efforts to protect sea turtles.
The Memorandum of Understanding (MoU) concerning Conservation Measures for Marine Turtles of the Atlantic Coast of Africa is a 1998 multilateral environmental memorandum of understanding that entered into effect on 1 July 1999 under the auspices of the Convention on Migratory Species of Wild Animals (CMS), also known as the Bonn Convention. The MoU focuses on the protection of six marine turtle species that are estimated to have rapidly declined in numbers along the Atlantic Coast of Africa. The MoU covers 26 range States. As of May 2013, 23 range States have signed the MoU.
The hawksbill sea turtle is a Critically Endangered sea turtle belonging to the family Cheloniidae. It is the only extant species in the genus Eretmochelys. The species has a worldwide distribution, with Atlantic and Indo-Pacific subspecies—E. i. imbricata and E. i. bissa, respectively.
Watamu Marine National Park and Reserve is located in Kenya. Established in 1968, it was one of Kenya's first marine parks. It is located about 90 miles (140 km) north of Mombasa, Kenya's second largest city. Its coral gardens are merely 300 metres (980 ft) from the shore and are home to approximately 600 species of fish, 110 species of stony coral and countless invertebrates, crustaceans and molluscs. Water temperature varies from 20 degrees Celsius to 30 degrees Celsius. The park was designated as a biosphere reserve in 1979.
Nature Seekers is a community-based organization founded in 1990 with the aim of protecting nesting leatherback turtles in Trinidad and Tobago. The ultimate goal of the group was to reduce the problem of poaching which stood at 30 percent on a nightly basis. Through the efforts of tour guide services to visitors on Matura Beach, tagging of turtles, and patrolling the group has been able to reduce the percentage of poaching from 30 percent to zero. Now the group has expanded to include reforestation, waste recycling and natural jewelry with its core still being turtle conservation.
The Sea Turtle Conservancy (STC), formerly known as Caribbean Conservation Corporation is an American not-for-profit 501(c)(3) membership organization based in Gainesville, Florida. STC was incorporated, based on an earlier informal organization known as The Brotherhood of the Green Turtle, in 1959 by Mr. Joshua B. Powers in response to renowned ecologist Dr. Archie Carr's award-winning book, The Windward Road, which first alerted the world to the plight of sea turtles. Dr. Carr served as Scientific Director of STC from 1959 until his death in 1987. Since its founding, STC's research and conservation initiatives have been instrumental in saving the Caribbean green sea turtle from immediate extinction, as well as raising awareness and protection for sea turtles across the globe with 50 years of experience in national and international sea turtle conservation, research and educational endeavors. The organization began its work in Costa Rica, but has expanded its research and conservation efforts throughout Central America and the wider Caribbean.
Threats to sea turtles sea turtle species to be endangered. Of the seven extant species of sea turtles, six in the family Cheloniidae and one in the family Dermochelyidae, all are listed on the IUCN Red List of Endangered Species. The list classifies six species of sea turtle as "threatened", two of them as "critically endangered", one as "endangered" and three as "vulnerable". The flatback sea turtle is classified as "data deficient" which means that there is insufficient information available for a proper assessment of conservation status. Although sea turtles usually lay around one hundred eggs at a time, on average only one of the eggs from the nest will survive to adulthood. While many of the things that endanger these hatchlings are natural, such as predators including sharks, raccoons, foxes, and seagulls, many new threats to the sea turtle species have recently arrived and with
Sea turtle migration refers to the long-distance movements of sea turtles notably as adults but may also refer to the offshore migration of hatchings. Sea turtle hatchings emerge from underground nests and crawl across the beach towards the sea. They then maintain an offshore heading until they reach the open sea. The feeding and nesting sites of adult sea turtles are often distantly separated meaning some must migrate hundreds or even thousands of kilometres.
The Leatherback Trust is a non-profit organization dedicated to the conservation and study of sea turtles and freshwater turtles, with special regard for the leatherback sea turtle. The Leatherback Trust was founded in 2000 to help consolidate Las Baulas National Marine Park, one of the last major nesting site for the critically endangered leatherback turtle in the Eastern Pacific Ocean. The park protects Playa Grande, Playa Ventanas, Playa Langosta, the ocean out to 12 nautical miles, wetlands, highlands, and the coast inland to 125 m from the high tide line.
For other uses, see Costa Rica.
