We can ALL LIVE TOGETHER!
02/07/2025

Citizen Science: Recording of Sporadic Nesting of Sea turtles across the Aegean

Every summer ARCHELON covers in total almost 100 km of beach in Greece, with organized daily action, recording and protecting Loggerhead nests. But we cannot be everywhere! For over four decades, many people have been participating in an extraordinary action, reporting turtle sightings and tracks across the Greek coastline. We are grateful to all of you who responded to our call all these years.

Whether it was a turtle emerging to nest, some tiny hatchlings making their way to the sea, or just the characteristic tracks left on the sand, every report helped build a bigger picture of sea turtle activity in the Aegean Sea. In the early days, reports came in through handwritten notes and phone calls. Today, with a dedicated online platform and even social media, your contributions are easier than ever to share—and more important than ever.

What We Learned Together

Thanks to your interest, we have confirmed 577 unique nesting events outside our regularly monitored areas—an incredible testament to citizen power in conservation.

Margaritoulis_et_al_25_Sporadic_nests_in_the_Aegean_Sea_b3782f3e0e.pdf_extract_Page_1.png

  • Crete topped the list with 309 nesting events, likely due to warmer southern waters!
  • Nesting was also reported as far north as Lesvos, Magnesia, Halkidiki, and even a non-nesting emergence in Samothraki!
  • Every confirmed sighting was supported by photographs, helping us verify the species—all Loggerhead (Caretta caretta) turtles!
  • In many cases, you did not just report nests—you protected them following the instructions provided on your website as well as on the calendar ARCHELON sends every year to all Port Authorities.

sporadic nest reporting

Why This Matters

Most loggerheads always return to nest to the same beach they were born. However, some females during their travels make nests on beaches that are unknown to us. These sporadic nets can be found in any suitable beach in the southern Aegean (south of 39°N) and your eyes on the ground help us find them. Your reports have helped identify new nesting hotspots, and are expected to give insights of the adaptation of the species to climate change in the Mediterranean.

Beyond the practical value of citizen science, we understand this is more than just data—it is a story of thousands of people who care for nature on our planet. Your passion, curiosity, and quick thinking have helped protect one of the Mediterranean’s most iconic species. Read the recently published results by ARCHELON here.

Thank You. Keep watching, keep reporting, and keep protecting. If you find a nesting turtle, tracks or hatchlings fill in our Registration Form.

We can all live together! This is our motto since 1983!

RECENT NEWS

  1. OUR NEWS
    18/04/2026

    How a sea turtle illuminated the unknown paths of the Aegean

    Helen Jane was not just another dead sea turtle found on the Greek coastline. For ARCHELON researchers, she was a living beacon of information

    Read more
  2. OUR NEWS
    17/04/2026

    Is it Really 1 in 1,000? New Science Challenges the Iconic Sea Turtle Statistic

    For decades, one quote has defined the struggle of sea turtle conservation: 1 in 1,000. This statistical information suggests that for every thousand hatchlings that enter the sea, only one will survive the long journey to adulthood.

    Read more
  3. OUR NEWS
    10/04/2026

    ARCHELON takes part in Chania's “Move It Now” initiative

    Through educational activities, games and discussions, students had the opportunity to understand that every "green" choice in our daily lives is a direct help to the environment.

    Read more
  4. OUR NEWS
    09/04/2026

    Coming together for sustainable tourism in Chania

    Looking towards the upcoming nesting season, the tourism community of Chania gathered at the city’s Town Hall.

    Read more
  5. OUR NEWS
    08/04/2026

    The Return of the “Giant”: Everest Swims Again in Greek Seas After Two Years of Rehabilitation

    The story of 'Everest' began in May 2024 in Preveza, when the sea turtle was found with a severe, intentional head injury. Upon arrival at the Rescue Centre, its condition was critical: malnourished, weighing just 81 kg, and suffering from serious buoyancy problems that made survival in the sea impossible.

    Read more
  6. OUR NEWS
    07/04/2026

    Through the dust: Rethymno looks for a sustainable future with the sea turtles

    Neither the African dust nor the sandstorm of last Wednesday stood in the way of ARCHELON's event at the Rethymno City Hall!

    Read more
  7. OUR NEWS
    02/04/2026

    Volunteering Has Never Been More Attractive: Special offers for 2026

    ARCHELON invites you to join its field projects and actively protect sea turtles and their habitats.

    Read more
  8. OUR NEWS
    09/03/2026

    The Annual General Assembly of the Association

    ARCHELON's Members were invited to attend the Annual General Assembly on Saturday, February 28 at the Sea Turtle Rescue Centre.

    Read more
  9. OUR NEWS
    03/03/2026

    Join us for the Online Presentation of 2025 Results!

    On Monday, March 23rd, we have the chance to meet again online and share what we accomplished together in the past year.

    Read more
  10. OUR NEWS
    03/03/2026

    A Digital Adventure for Your Class with ARCHELON

    Through a live connection with the Centre, students learn about the turtles’ rescue stories and discover how everyday human activities can negatively impact marine ecosystems.

    Read more
  11. OUR NEWS
    24/02/2026

    32 Years Returning to Nest: A Record Reproductive Lifespan for the Loggerhead Sea Turtle in Kyparissia Bay

    When we analyzed the turtles’ codes, we realized that this was a turtle that had been tagged for the first time in the area 32 years ago! Specifically, turtle P4849 was tagged on July 7, 1993 and today is the turtle with the longest documented reproductive lifespan in Kyparissia Bay!

    Read more
  12. OUR NEWS
    18/02/2026

    "The Mediterranean We Protect" ARCHELON Presented the 2025 Results and the New LIFE MareNatura Exhibition

    The presentation of our Accounts for 2025 was held with great success on Saturday, February 14th in Glyfada, honoring the people who are on the front lines for the protection of the Mediterranean.

    Read more
  13. OUR NEWS
    11/02/2026

    ARCHELON in the Lakonikos Bay: Nature, Research, Volunteering

    The year 2025 was a milestone: a total of 1,253 nests were recorded and protected, while 7 female turtles were equipped with satellite transmitters, sending valuable data about their journeys across the Mediterranean.

    Read more
  14. OUR NEWS
    23/01/2026

    A turtle we treated 10 years ago was found in Spain!

    “Castello” is a male Loggerhead turtle that was treated at our Rescue Centre in 2015. In 2025 he was found again at a Rescue Centre in Spain!

    Read more
  15. OUR NEWS
    02/01/2026

    Against All Odds: A Story of Marine Resilience from Amvrakikos Gulf

    One turtle has been surviving for at least six years without a lower jaw!

    Read more
1 out of 0
Subscribe to our newsletter!
Learn about our latest actions and find out about our programs and how you can help sea turtles!