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The Mediterranean Sea supports diverse marine mammals, but human activities like fishing and pollution threaten their survival. Many species face significant conservation challenges, with several listed as Threatened.

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Area of Science:

  • Marine Biology
  • Conservation Science
  • Oceanography

Background:

  • The Mediterranean Sea, though small, hosts a rich diversity of marine mammals, with 28 species recorded.
  • Regularly occurring species include the Mediterranean monk seal and 11 cetacean species, often with distinct genetic populations.
  • Seventeen additional species are occasional vagrants to the region.

Purpose of the Study:

  • To assess the conservation status and threats facing marine mammals in the Mediterranean Sea.
  • To highlight the impact of human activities on marine mammal populations.
  • To provide an overview of the current biodiversity and ecological challenges in the region.

Main Methods:

  • Review of existing data on marine mammal occurrence and population genetics in the Mediterranean.
  • Analysis of documented threats, including mortality factors and redistribution causes.
  • Assessment of conservation status based on IUCN Red List criteria.

Main Results:

  • Seven of the 12 regularly occurring marine mammals are listed as Threatened.
  • Major threats include fisheries interactions, pollution, ship strikes, and noise disturbance.
  • Human activities cause both mortality and redistribution of marine mammal populations.
  • Some species remain Data Deficient or unassessed, indicating knowledge gaps.

Conclusions:

  • Marine mammals in the Mediterranean face severe threats from human activities, jeopardizing their long-term survival.
  • Urgent conservation actions are needed to mitigate threats such as bycatch, pollution, and habitat degradation.
  • Further research is required to address data deficiencies for several species and to fully understand climate change impacts.