Fieldwork at the beach of Preveza
The last ARCHELON mission for 2020 was completed a couple of days ago at the beach of Preveza, in western Greece. More than 15 loggerhead nests have been recorded there, from Kastrosykia to Mytikas, during the last 4 summers.
Unlike other organisms that have their sex determined genetically, the sex of the loggerhead hatchlings is determined by temperature. This phenomenon is observed in most species of turtles, crocodiles, many fish species and lizards.
The ratio of male/female hatchlings depends on the range of temperatures inside each nest and it is different in each nesting area of Greece. Lower temperatures in the nest favor male hatchlings while higher temperatures favor female ones. Determining this ratio is vital for any population analysis, especially so for the future survival of this species in the face of climate crisis.
Next comes the analysis of data, which will be done in the upcoming months. Until then, stay safe!
Big loss after 28 years of active reproduction
The Green Fund co-financed the Zakynthos project for the first time
RECENT NEWS
- OUR NEWS23/10/2025
ARCHELON participates in the "Science Festival 2025 – The Voice of the Ocean"
The French Institute of Greece is organizing a celebration from 10 to 27 November 2025 dedicated to science and the ocean! World premiere of the LIFE MareNatura documentary on November 13th.
- OUR NEWS22/10/2025
Kyparissia Bay: ARCHELON Records 6,100 Nests and Calls on the State to Immediately Implement the National Action Plan for the Loggerhead
In 2025 approximately 6,100 nests were recorded, marking a 74% increase compared to the average of the previous 12 years!
- OUR NEWS10/10/2025
We bid farewell to a devoted environmentalist and friend, Yiannis Roussopoulos.
- OUR NEWS02/10/2025
Jane Goodall’s words still warm our hearts
Thank you, Dr. Goodall, for all that you have taught us and for the life example you have left behind.
- OUR NEWS29/09/2025
Turtles, Dolphins, and Birds: Local Communities and Scientists come together for the future of Amvrakikos Gulf
A one-day conference held on Wednesday, September 24, in Menidi, Amfilochia, united the voice of the local community with leading scientists and environmental organizations for Amvrakikos Gulf.
- OUR NEWS26/09/2025
Biologists from the 'LIFE ADAPTS' project send their message to the community
- OUR NEWS23/09/2025
Aquila Rithymna Beach Hotel becomes an Advocate for ARCHELON in Rethymno
The hotel's generous donation directly supports the costs of conservation activities during the 2025 and 2026 nesting seasons.
- OUR NEWS19/09/2025
A Season of Success for the Amvrakikos Project
The 2025 field season for ARCHELON's Amvrakikos project has officially come to a close!
- OUR NEWS12/09/2025
Τhe first green sea turtle nest has hatched in Naxos island!
The emergence of a nest on Naxos is a sign that the geographical range of this threatened species in the Mediterranean may be expanding.
- OUR NEWS09/09/2025
School Tours at ARCHELON: Reserve Your Spot from September 11
The magical world of sea turtles and the people who are taking care of them is waiting, offering you a unique experience and valuable knowledge.
- OUR NEWS05/09/2025
The first report of 2025 delivered from Romanos Beach, Messinia
From mid-May to early September 2025, the project recorded about 80 nests along the 2.7 km stretch of Romanos beach.
- OUR NEWS29/08/2025
Turtle Run in Chania: Lace up your running shoes and get ready!
September 7th, Chania: Join the event and support the protection of one of the most iconic marine species in the Mediterranean.
- OUR NEWS27/08/2025
Citizens Help us Map Sea Turtle Sporadic Nesting in the Ionian Sea
This study is particularly important as it highlights the power of citizen science. Public eyes on beaches, outreach through online platforms and new reporting tools are expanding our understanding of turtle nesting beyond the beaches we monitor.
- OUR NEWS20/08/2025
A nesting turtle brings hope amidst a night of fire
After a 12-hour period filled with fear and uncertainty, the family witnessed a miracle of nature. “It brought us peace and reminded us of what is important”.
- OUR NEWS14/08/2025
ARCHELON’s Life-Saving Chain with the Support of the Green Fund
Thanks to persistence, medication, daily care, and a great deal of patience, “Snowball” gradually moved from a critical state to full recovery.