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Holden's Reef, Pen Llyn a'r Sarnau SAC

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Uploaded by on Aug 12, 2010

Holden's Reef is a methogen-precipitated reef that is formed as a result of a chemical reaction between seawater and the escape of natural gas from the seabed.

This reef is a feature of the Pen Llyn a'r Sarnau Special Area of Conservation (SAC). It supports a diverse number of fish species, which can be used as an indication of the health of the reef. The Countryside Council for Wales' Marine Monitoring Team visits the site on a yearly basis in order to be able to report of the status of the of the reef.

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  • How interesting and sad. Thanks for the vid.

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