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Swansea University study tracks nesting turtle numbers.

Researchers at Swansea University, working with colleagues in Australia and the Seychelles, have announced the longest recorded migration for the green sea turtle, an endangered species. One of eight turtles which were tracked by satellite was found to have travelled 3979 km, from the Chagos Islands in the Indian Ocean, to the coast of Somalia in east Africa.

Record-breaking turtle migration exposes limits of marine reserves.

A juvenile green sea turtle discovered floating in an estuary in Broome has been brought to Murdoch University's Animal Hospital for a CT scan.

Endangered turtle goes to lay eggs but airport runway is built on beach.

Turtle with stomach full of plastic rescued

Extensive seagrass meadows discovered in Indian Ocean through satellite tracking of green turtles.

Marine scientists have mapped previously unknown foraging grounds and migratory routes of Western Australia's green turtles to support conservation of the iconic threatened species.

Green turtle numbers continue to rise on a group of islands where the species has now been protected for more than 50 years, new research shows.

Around the world, declines in the mean size of nesting sea turtles have been reported with concerns of a concomitant decrease in the reproductive output of populations. Here, we explore this possibility using long-term observations of green turtles (Chelonia mydas) at Aldabra Atoll, Seychelles. Based on > 4500 individual measurements over 21 years (1996-2016), we found the curved carapace length of nesting females declined by about 0.64 cm per decade, from 111.43 to 110.08 cm. For 391 individuals that were measured more than once with measurement interval of 2.8-19 years apart, the mean growth rate was 0.14 cm year−1. Comparisons between the size of adult females and males were based on 23 and 14 weight measurements, 107 and 33 carapace length measurements and 103 and 33 carapace width measurements, respectively, taken during 1981-1983. Adult females were larger than males, with the sexual dimorphism index, i.e. the ratio of size of the larger sex to the smaller, being 1.09 and 1.10 for carapace length and width, respectively, and 1.25 for weight. Smaller females tended to lay fewer eggs per clutch but the decrease in female mean size was accompanied by increases in numbers of turtles nesting annually, such that the estimated total numbers of eggs per year increased from 1.3 million to 2.0 million between 1996 and 2016. Therefore, a decrease in mean size of nesting females has not compromised egg production for this population.

Endangered green turtle numbers only half of official estimates.