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 NEWS31/07/2025
ATTENTION! Please do not feed sea turtles – They are not pets- Protect them from human induced impacts
ARCHELON informs that the phenomenon of feeding sea turtles by people in coastal areas, ports and tourist spots has been observed in recent years. Despite good intentions, this practice causes serious problems – for turtles and for people alike.
- OUR NEWS25/07/2025
New Info Station in Kyparissia Opens for LIFE MareNatura Project
Located at the beachfront of the town, the Info Station operates daily 18:30 - 21:00.
- OUR NEWS21/07/2025
Public Excavations of Sea Turtle Nests in Crete
The excavations are open for both kids and adults and take place on the nesting beaches of Rethymno, Chania, and the Messara Bay during the months of August and September.
- OUR NEWS21/07/2025
Public Excavations of Sea Turtle Nests in the Peloponnese
The excavations are open for both kids and adults and take place on the nesting beaches of Kyparissia Bay, Romanos, Koroni and Lakonikos Bay during the months of August and September.
- OUR NEWS16/07/2025
Earlier than ever before was the start of the 2025 Hatching Season of Loggerheads in Greece – The first hatchlings have reached the sea!
We are excited to announce the beginning of the 2025 sea turtle hatching season, with the earliest hatching event ever recorded since monitoring began in 1984.
- OUR NEWS15/07/2025
Important presentations at the 16th International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions (ICZEGAR)
ARCHELON actively contributed to the Congress with three oral presentations, highlighting key aspects of its scientific and conservation work for sea turtles.
- OUR NEWS02/07/2025
Citizen Science: Recording of Sporadic Nesting of Sea turtles across the Aegean
For over four decades, many people have been reporting turtle sightings and tracks across the Greek coastline. Thanks to them, we have confirmed 577 unique nesting events outside our regularly monitored areas
- OUR NEWS01/07/2025
Satellite Tagging Completed and Captured on Film in Crete
ARCHELON has just successfully completed the 2025 deployment of satellite transmitters on Loggerhead Sea Turtles (Caretta caretta) in Crete, as part of the ongoing LIFE MareNatura Project. This year’s work in Crete was extra special: the LIFE MareNatura Documentary team joined us in the field!
- OUR NEWS23/06/2025
Enjoy the Beaches Responsibly: Together We Protect the Sea Turtles of Kyparissia Bay!
So far, more than 2,000 nests have been recorded in the area. In order to best manage the protected beaches, we have adapted our field work protocols.
- OUR NEWS16/06/2025
World Sea Turtle Day: We can all live together!
Today, June 16th, we celebrate World Sea Turtle Day. On this occasion, ARCHELON expresses its warmest thanks to all citizens, volunteers, donors and supporters who actively contribute to our work.
- OUR NEWS10/06/2025
New Adaptation Strategies for Sea Turtles and Mediterranean Monk Seals
Institutions, associations and researchers will work for 5 years alongside the coastal communities to evaluate and respond to the effects of rising sea levels and ocean warming. These are to be developed through the ‘LIDE ADAPTS’ project which is being carried out in Italy, Greece and Cyprus.
- OUR NEWS08/06/2025
World Oceans Day: Conservation and Anthropogenic “Wounds” in Laganas Bay, Zakynthos
On the occasion of World Oceans Day, ARCHELON brings to the fore the challenges facing Laganas Bay, Zakynthos - one of the most important refuges of the loggerhead sea turtle in the Mediterranean.
- OUR NEWS06/06/2025
Sekania: History of the most precious refuge for the Loggerhead in Zakynthos
Sekania, a secluded 600-meter-long beach in Zakynthos, is a global model of success in biodiversity conservation, with more than 24,000 sea turtle nests recorded over the last 40 years.
- OUR NEWS05/06/2025
World Environment Day: Keeping Sea Turtle Nesting Beaches Safe from Plastics and Bulldozers
On June 5th, we celebrate World Environment Day, a day established by the United Nations in 1972. This year’s theme is #BeatPlasticPollution, and ARCHELON is calling for action on the sea turtle nesting beaches.
- OUR NEWS02/06/2025
Sea Turtles Return to Crete: A Shared Victory for Nature and Sustainable Travel
ARCHELON volunteers have just located the first sea turtle nests of the season on the beaches of Rethymno, Messara, and Chania. Now the challenge to prove that tourism destinations on Crete can make a significant move towards sustainability is on again.