Chelonia mydas

Chelonia mydas
Name	Green sea turtle
Status	Endangered
Status system	IUCN3.1
Genus	Chelonia
Species	mydas
Authority	(Linnaeus, 1758)

Chelonia mydas is a species of large marine turtle found in tropical and subtropical seas worldwide. It is notable for its long migrations between feeding grounds and natal nesting beaches and for its cultural and ecological significance in regions including the Caribbean, Mediterranean, Pacific islands, and Southeast Asia. Researchers from institutions like the Smithsonian Institution, National Oceanic and Atmospheric Administration, and World Wildlife Fund have documented its biology, threats, and conservation needs.

Taxonomy and Naming

Chelonia mydas was described by Carl Linnaeus in 1758 under his binomial system, and its placement has been treated within the family Cheloniidae. Historical taxonomy involved contributions from naturalists associated with the Royal Society and museums such as the Natural History Museum, London and the American Museum of Natural History. Common names have appeared in literature from the British Museum expeditions and in reports connected to voyages by explorers like James Cook and colonial administrations in the Philippines and Hawaii.

Description and Anatomy

Adults have a single pair of prefrontal scales and a streamlined carapace varying in color with diet; observations have been recorded in fieldwork coordinated by teams from University of Florida, University of Exeter, and University of Queensland. Morphological studies published in journals edited by staff at the Royal Society of London and the California Academy of Sciences describe skull anatomy, keratinous beak structure, and flipper morphology. Physiological research supported by laboratories at the Scripps Institution of Oceanography and the Woods Hole Oceanographic Institution details adaptations for marine osmoregulation, diving physiology, and thermal tolerance noted by contributors affiliated with the Max Planck Society and the Smithsonian Tropical Research Institute.

Distribution and Habitat

Chelonia mydas occupies neritic and oceanic habitats across the Atlantic, Pacific, and Indian Oceans, with population aggregates in regions governed by agencies such as the NOAA Fisheries, the European Commission marine directives, and national ministries in Australia, Mexico, and Costa Rica. Satellite telemetry projects involving the National Aeronautics and Space Administration and marine protected area programs coordinated with the United Nations Environment Programme have traced migrations between feeding grounds near the Great Barrier Reef, Galápagos Islands, and nesting beaches on islands administered by Japan and Indonesia. Habitat use studies reference coral reef systems managed under frameworks like the Convention on Biological Diversity and coastal zones impacted by infrastructure in the United States and Brazil.

Behavior and Ecology

Feeding ecology includes seagrass grazing and algal consumption documented during collaborative surveys with researchers from the University of Oxford, University of Cambridge, and the Australian National University. Ecological interactions with predators and parasites have been recorded by teams funded by agencies such as the European Research Council and the National Science Foundation, and in studies involving conservation NGOs like Conservation International and The Nature Conservancy. Long-distance navigation and natal homing have been subjects of research intersecting with institutions including the Scripps Institution of Oceanography, Woods Hole Oceanographic Institution, and studies referencing historical voyages by Christopher Columbus in regional context.

Reproduction and Life Cycle

Nesting behavior, clutch size, and hatchling emergence have been intensively monitored at sites protected by entities like Parks Canada, CONANP (Mexico), and NGOs including Sea Shepherd Conservation Society and Ocean Conservancy. Demographic models developed with input from the IUCN Species Survival Commission and population assessments by the Convention on International Trade in Endangered Species of Wild Fauna and Flora inform management plans used by national governments such as Panama and Mauritius. Studies of sex determination linked to incubation temperature reference experimental work performed at universities like the University of Miami and the University of California, Davis.

Conservation Status and Threats

Chelonia mydas is listed as Endangered by the International Union for Conservation of Nature and is protected under instruments including CITES and national laws in states such as Australia, Mexico, and the United States. Major threats include bycatch in fisheries regulated by bodies such as the Food and Agriculture Organization, coastal development projects approved by ministries in Thailand and Philippines, and illegal trade addressed by enforcement agencies like INTERPOL and customs services in Canada and United Kingdom. Conservation responses involve nesting beach protection by organizations like WWF and community programs supported by the European Union and the Global Environment Facility, along with rehabilitation work in facilities run by the Sea Turtle Conservancy and veterinary centers affiliated with the University of Sydney.

Category:Sea turtles Category:Endangered species