Alien species in our seas

The Mediterranean Sea's biodiversity is constantly evolving, colonized by species expanding their ranges and arriving through natural corridors, such as the Strait of Gibraltar, and by non-native or alien species introduced by human activities or arriving through artificial corridors such as the Suez Canal. Some of these species can also pose a threat to human health, being toxic to eat or poisonous upon contact.

To help marine life recognize new species that can potentially be observed and fished in our seas, including those that pose a threat to human health, a brochure has been created, an updated version of the 2021 edition.

Any reports sent to researchers will also help monitor the distribution and spread of these species in our waters.