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Cold-water coral

Cold-water coral ©DeepLinks Project - Plymouth University, Oxford University, JNCC, BGS

Cold-water coral

Enw gwyddonol: Lophelia pertusa
Did you know that there are coral reefs in the UK? UK seas are home to some amazing cold-water corals that form reefs on the seabed over 400m deep.

Species information

Statws cadwraethol

Cold-Water Coral Reefs are a Priority Habitat under the UK Post-2010 Biodiversity Framework, listed in Annex I of the Habitats Directive (reefs) and on the OSPAR List of Threatened and/or Declining Species and Habitats.

Pryd i'w gweld

January to December

Ynghylch

In the UK, cold-water coral reefs are found on the seabed off Scotland. Like their tropical counterparts, the reefs are a living organism built of thousands of individual polyps, anemone-like creatures that share a hard skeleton. These reefs develop over many hundreds of years, with live coral sitting on top of layers of now-empty skeleton, sand and mud. The polyps feed by extending their stinging tentacles into the water column to catch plankton, krill and other small crustaceans. Lophelia reefs can become large, highly branched colonies which create a very strong, long-lasting structure. The reef creates a habitat for other marine life, with many deep sea species depending on them for food and shelter.

Sut i'w hadnabod

A highly branching white coral that forms reefs on the deep seabed.

Dosbarthiad

Found in deep waters off Scotland, particularly the Mingulay Reef Complex just 13km off the island of Mingulay.

Habitats

Roeddech chi yn gwybod?

Lophelia reefs grow very slowly - only between 4 - 25mm per year! As such, the biggest reefs are likely to be thousands of years old with some recorded as growing in iceberg plough marks made during the last ice age.