Cap de Creus as a refuge and feeding ground for blue sharks

03 January 2024 Costa Brava

The blue shark is one of the oceanic and pelagic species found in all tropical and temperate oceans worldwide. It is also documented in the Mediterranean, specifically in the Cap de Creus Canyon. Currently, it is endangered. For this reason, the discovery of this place as a refuge and feeding ground for blue sharks emphasizes our responsibility to preserve it.


Recent studies enable the identification of blue shark babies


This discovery has been possible thanks to a study conducted by two biologists who carried out a total of 54 periodic outings to observe the sharks. This research began in 2022, following initial sightings of blue sharks in the area between 2020 and 2021.

In 2023, scientists and the Department of Climate Action continued their collaboration in the study. Between late spring and mid-August, approximately fifty outings were conducted, resulting in the identification of ten pups of this species out of a total of 90 specimens.



Why preserve this place as a refuge and feeding ground for blue sharks?


Furthermore, studies also reveal that births mainly occur between mid-June and July.

The babies, at birth, measure approximately 40 cm in length. Since their subsequent growth is rapid, this gives them the full capacity to survive independently. As a consequence, the majority of adult specimens eventually leave the area.

Blue sharks are viviparous, and their gestation lasts for 12 months, coinciding with the period when these waters become an ideal environment for the birth and growth of young sharks.

Jordi Ruiz, responsible for invasive species and conservation projects at Climate Action, describes the data as extraordinary and emphasizes the urgent need to preserve this natural gem.