Spread of Japanese wireweed in Scotland

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Experts have warned an alien seaweed which has invaded Scotland's west coast is spreading at an alarming rate.

The Cumbrae-based University Marine Biological Research Station said Japanese wireweed could threaten the environment, fishing and fish farms.

Found in the Pacific Ocean, the seaweed may have arrived in Scotland on international shipping.

Within four years it has spread up the Scottish west coast to Skye in the Highlands.

Dr Philip Smith, of the University Marine Research Station at Millport on the Firth of Clyde, said he was shocked at how quickly it had taken hold.