Ecosystem overviews

Celtic Seas Ecoregion

State of seabirds

​​At least 23 seabird species breed on the coasts of the Celtic Seas.

​​​​​​​​​​​​​​​​​These colonies are particularly important in a global context of abundance for Manx shearwater Puffinus puffinus, British storm-petrel Hydrobates pelagicus, and northern gannet Morus bassanus. Trends in the numbers of many breeding species have been downwards in the past decade. The variation in habitats (from coastal to shelf break and deep seas) mean that the seas are also used during the non-breeding season by many further species and by seabirds that breed elsewhere.​​

Seabirds that are threatened or declining in the Celtic Seas according to OSPAR:

Larus fuscus fuscus ​​Lesser black-backed gull
Puffinus mauretanicus Balearic shearwater
Rissa tridactyla Black-legged kittiwake
Sterna dougallii Roseate tern
Uria lomvia Thick-billed murre

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Celtic Seas Ecoregion

International Council for the Exploration of the Sea (ICES) · Conseil International pour l'Exploration de la Mer (CIEM)
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