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A SERIES of 15 marine surveys in 2011, covering over 2,000 square miles, have uncovered rare species and furthered knowledge of the biodiversity of Scotland's seas, the Scottish Government revealed today, Thursday.

Off the West Coast, they say, very rare Fan Mussels were found. At up to 48 cm long, this is Scotland’s largest sea shell.

Around the Small Isles more than 100 specimens were discovered, the largest aggregation in UK waters. With golden threads likened to human hair so fine they can attach to a single grain of sand, seamen once believed they fed on drowned sailors.

In the waters off Tankerness in Orkney, the prehistoric 'faceless and brainless fish' Amphioxus was uncovered. This elusive, rarely seen species is regarded as a modern representative of the first animals that evolved a backbone. With a nerve chord down its back, this strange fish has no specific brain or face.

The largest Horse Mussel bed in Scotland was revealed in waters near Noss Head, Caithness. Horse Mussels stabilise mobile seabeds and provide a critical ecosystem for other species. Known as 'Clabbydhhu' in Gaelic (translates as 'enormous black mouth') these slow-growing molluscs can live to nearly 50 years old.

Other finds included Flame Shell beds in Loch Linnhe, Argyll, a cryptic species only found in a very few West Coast locations with bright orange feeding tentacles.

Meanwhile new communities of Northern Feather Star – a brightly coloured species with ten feather-like arms fanning out from a central disc – were revealed off the Sound of Canna.

Scottish Environment and Fisheries Secretary Richard Lochhead said:"In an age where the lands of the world have been mapped out and recorded, it is amazing how many discoveries are waiting to be found under the waves. Spanning from the weird to the wonderful, discoveries this year have included the bizarre Amphioxus and the beautiful yet elusive brightly coloured Flame Shell.

"The waters around Scotland are rich in such fascinating biodiversity and it is our responsibility to protect this fragile environment. That is why we have ramped up our marine survey work, with plans being prepared for new surveys in 2012 to further our knowledge of what lies beneath Scotland's seas."

The surveys this year benefited from the use of the latest technology, with acoustic multi-beam scanners used to create 3D images of the seabed. As a result, first-ever marine maps of many new areas were possible, including waters around Rockall, to the west of the Outer Hebrides, around the Isle of Canna and within Sinclair Bay in Caithness.

Susan Davies, director of policy and advice with Scottish Natural Heritage, added:"With many new discoveries 2011 has been an exciting year for everyone involved in the marine surveys around Scotland. Working with scientists from our partner organisations has not only been enjoyable, pooling our resources has enabled us to cover a far greater area and learn so much more about the life our seas support.

"Scotland's seas really are a fantastic asset. The findings from these surveys will help us to manage them sustainably and ensure future generations can also enjoy the benefits of a healthy and diverse marine environment."

Also commenting on the findings, WWF Scotland's Head of Policy, Dr Dan Barlow said:"These surveys highlight that Scotland's seas and coasts are home to a truly amazing range of weird and wonderful wildlife. By providing vital information on what lies beneath the waves these surveys will help inform decisions on better ways to protect this important resource now and long into the future.

"From helping inform the appropriate deployment of marine renewables to supporting the roll out of a network of Marine Protected Areas, these survey findings will prove invaluable in helping ensure the recovery of Scotland's seas."

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