This Guide includes all seabird species:
- breeding in the Mediterranean Sea and adjacent coasts (Atlantic Ocean till Portugal and Morocco, Black Sea);
- capable of large movements (several hundred kilometres);
- relying mainly on the marine environment during their life cycle.
You are invited to complete the interactive maps by sending us any documented evidence of missing nesting sites.
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/gannet-1-e1622472901499.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/mure-1-e1622473065252.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/atlpuffin-1-e1622473112391.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/razorbill-1-e1622473131932.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/greatskua-1-e1622473262377.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/arcticskua-1-e1622473703640.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/pomskua-1-e1622473729702.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/longtailedskua-1-e1622473808259.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/lesserblackbacked-1-e1622473826875.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/mewgull-1-e1622473851831.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/blackleggedkittiwake-1-e1622473874778.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/littlegull-1-e1622473920805.png)
![](https://ciesm.org/marine/programs/seabirds/wp-content/uploads/2020/11/blacktern-1-e1622473942489.png)