Marathonisi in Zakynthos: a special nesting beach
In the gulf of Laganas there are 6 nesting beaches, which participate in the whole nesting activity of the gulf at a rate from 53% (in the strictly protected beach of Sekania) to 6% (in the beach of Gerakas). It has been recently proved that the number of nests is not the only factor which qualifies a nesting beach as important but also the gender of the hatchlings. No matter how strange it may seem, the gender of the young Caretta caretta is defined by the temperature of the eggs while being hatched. According to research done by the specialist on the subject, professor of the University of Toronto, Dr Nicholas Mrosovsky, who was invited by ARCHELON, the crucial temperature for the Caretta caretta nesting in Greece is 29 C. If the hatching temperature is above this, the young turtles become female, whereas, if it is below 29 C, they become male.
This important discovery gives new perspectives in the management of the nesting beaches and defines new criteria for their international ranking.
Translation: Anna Trigatzi
“Manolis” is the name of the eleventh sea turtle caretta-caretta released this year
Caretta-caretta nesting season started in Rethymno (Crete)!
RECENT NEWS
- OUR NEWS29/06/2026
New Sea Turtle Protection Project in Corfu
ARCHELON partners with the Ionian Environment Foundation and the Mar-Bella Collection Hotel Group to Protect the Nesting Beaches of Corfu
- OUR NEWS26/06/2026
ARCHELON & TUI Turtle Aid Greece: 3 successful years in Crete
With the completion of the “TUI Turtle Aid Greece” project, ARCHELON presents impressive results in nest protection, the hotel employees training and raising awareness among 66,000 tourists.
- OUR NEWS22/06/2026
ARCHELON expresses its sorrow at the loss of Mona Khalil
- OUR NEWS19/06/2026
The world of marine megafauna: New Photo Exhibition at Agiannakis Environmental Station
The Exhibition is part of the LIFE MareNatura Project and is open to the public every Saturday 18:00 - 21:00.
- OUR NEWS16/06/2026
New data reveals that sea turtles follow much more complex migration strategies
World Sea Turtle Day is an opportunity to celebrate our achievements, but also to remember why we continue to research and protect these ancient ocean travellers.
- OUR NEWS16/06/2026
Coordinated action in Greece, Cyprus and Italy to protect sea turtles against the climate crisis
Today, June 16, the world celebrates World Sea Turtle Day. In the Mediterranean, this celebration comes at a critical turning point.
- OUR NEWS15/06/2026
Turtle Festival: Diving into Deep Waters at ARCHELON’s Sea Turtle Rescue Centre!
On the occasion of World Sea Turtle Day (June 16), last Saturday the ARCHELON Sea Turtle Rescue Centre opened its doors to the public for this year’s Turtle Festival, themed “Into Deep Waters.”
- OUR NEWS09/06/2026
Celebrating World Environment Day with Sea Turtles in Rethymno
Last Friday, ARCHELON's team in Rethymno took part in a special awareness-raising event, co-organized by the Municipality and the 2nd Experimental Primary School of Rethymno.
- OUR NEWS02/06/2026
Clean beaches, safe turtles: Our guide to responsible action
See some simple but crucial rules that must be followed for clean nesting beaches!
- OUR NEWS29/05/2026
Eight Hotels in northern Crete Receive “Turtle-Friendly” Certification from the TUI Care Foundation.
The eight hotel establishments in Northern Crete are among the first businesses worldwide to receive the new “Turtle-Friendly” certification from the TUI Care Foundation, developed in collaboration with ARCHELON. This distinction recognizes their commitment to protecting the nesting beaches of the loggerhead sea turtle and highlights the importance of cooperation between the tourism sector and nature conservation initiatives.
- OUR NEWS25/05/2026
Greek beaches stand out with 624 "Blue Flags"
On May 14th we met at Paleo Faliro for the official announcement of the 2026 awards of the International Blue Flag Program, organized by the Hellenic Society for the Protection of Nature.
- OUR NEWS18/05/2026
The nesting season has started in Greece: The first sea turtle nests for 2026 are spotted!
The first nests of the loggerhead sea turtle for 2026 have been found in Kyparissia Bay and in Zakynthos.
- OUR NEWS07/05/2026
ARCHELON’s Sea Turtle Tours presented in a Japanese Seminar for Sustainable Tourism
ur Sea Turtle Tours recently featured as a highlight in the Sustainable Tourism International Talk Sessions, organized by the Japan Alliance of Responsible Travel Agencies.
- OUR NEWS04/05/2026
Kids Turtle Festival 2026 "In Deep Water"
The ARCHELON Sea Turtle Rescue Centre opens its doors on World Turtle Day, June 13, and invites young and old to this year’s Kids Turtle Festival 2026 “In Deep Water”.
- OUR NEWS30/04/2026
Sea Turtle Beach Walk in Crete: A unique eco-tourism experience
The Sea Turtle Beach Walk is an organized activity that allows participants to get to know the natural environment of the sea turtle nesting site up close. Book your place now!