Counting the Loggerhead nests in Zakynthos - the work of an army of ants
For the past 41+ years, ARCHELON has been counting annually nests laid by loggerhead turtles on the island of Zakynthos, one of most important nesting areas in the Mediterranean. It is a very meticulous job as it is carried out every day, at the same time of year along the same beaches applying the same standardized methods. Trained volunteers coming from all over the world take on the job, braving the harsh working hours, the extreme heat and other adverse conditions. ARCHELON’s nest count program in Zakynthos is the oldest in the Mediterranean and one of the oldest in the world. Such long-term projects provide important information for the conservation status of sea turtle populations, and this is the reason that Zakynthos has been characterized as an index-area for IUCN.
Since the establishment of the National Marine Park of Zakynthos, ARCHELON cooperates closely with the Park’s Management Agency, now operating under the nationwide Natural Environment and Climate Change Agency (NECCA), providing every year data collected so at to facilitate the Park’s primary task which is the management of the nesting beaches.
In 2024, we counted a record number of nests since the start of our project 41 years ago. Nevertheless, the long-term trend shows that the number of nests is more or less stable as we have observed intense annual variations over the years (see figure). These variations are due to fluctuations on the environmental conditions at the foraging areas of turtles. Favourable conditions make more food available making the turtles to breed more frequently. So, some years we count more nests - however this does not automatically indicate an increase in the total number of breeding females.
However, the current record in the number of turtle nests laid on the island during 2024 also carries a feeling of optimism that if this trend continues, it may lead to the recovery of the Zakynthos sea turtle population.
Transforming Rethymno: Sustainable tourism opportunities with the sea turtle as ambassador
Successful wrap up of Amvrakikos project for 2024 marking two decades of dedicated work
RECENT NEWS
- OUR NEWS20/07/2026
43 Years of Tagging Sea Turtles in Greece Reveal Their Journeys in the Mediterranean
A new scientific publication highlights the important marine areas turtles use in the Mediterranean, through ARCHELON’s tagging program in Zakynthos, Kyparissia Bay and Rethymno.
- OUR NEWS17/07/2026
The first hatchlings of 2026 in Zakynthos!
The first nest hatched on Dafni beach in Laganas Bay in Zakynthos. Our team discovered the tiny tracks in the early hours of Tuesday, July 14th.
- OUR NEWS15/07/2026
A rare giant of the Greek seas: What our new study reveals about the Leatherback turtle
A new scientific publication brings together for the first time all available records of the Leatherback sea turtle (Dermochelys coriacea) in Greek waters.
- OUR NEWS10/07/2026
Raising awareness for the sea turtles in Corfu
To mark the launch of the project, ARCHELON carried out a series of outreach activities across Corfu, bringing local communities and visitors closer to sea turtle conservation.
- OUR NEWS08/07/2026
Protecting loggerhead sea turtles contributes to maintaining the balance of marine ecosystems.
Sea turtles play a vital role in maintaining healthy marine ecosystems. As part of marine food webs, they contribute to the balance and functioning of coastal and marine habitats.
- OUR NEWS05/07/2026
Is the Zakynthos National Marine Park Truly Protected?
Two cases of environmental law violations in Zakynthos that went unpunished.
- 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 NEWS24/06/2026
Effective turtle conservation begins with safeguarding the nesting beaches
Field surveys were carried out over two consecutive nesting seasons (2024–2025), assessing 167 nesting beaches across Greece, covering 270 km of coastline.
- 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.