​Greek Shark Logbook: Growing together with the people of the sea

Since the start of the Greek Shark Logbook, our project has continued to evolve. What began as a way to collect and organise shark observations is gradually becoming a stronger bridge between science, local knowledge, and the people who encounter sharks at sea.

Most of our shark observations still come from social media, but we are encouraged to see that reports from fishermen are increasing year by year:

In 2024, 5.9% of records came from fishermen.
In 2025, this increased to 15.8%.
In 2026, so far, fishermen reports have reached 20.7%.

This progress is very important to us.

Fishermen spend countless hours at sea and hold valuable knowledge about marine life, shark presence, behaviour, and seasonal patterns. By working together, we can improve the quality of our data and build a clearer picture of the open data of shark species in Greek waters.

For every observation, we do our best to contact each observer directly and collect as much detail as possible, including location, date, length, photos or videos, and any other relevant information. All records are stored carefully in our database.

We are grateful to everyone who has contributed so far, from members of the public to fishermen, divers, researchers, and coastal communities.

Our goal is simple: better data, better understanding, and better protection for sharks in Greece.

If you are a fisherman and have seen or accidentally caught a shark,