Scottish independence: Would saying 'Yes' change how we fish?
18 June 2014 Last updated at 10:58 BST
BBC Scotland referendum correspondent and triathlon competitor Laura Bicker was challenged to swim, cycle and run across the Western Isles.
In the first of Laura's three reports, she looks at the impact independence could have on Scotland's fishing fleet.
Fishing is big business in the Western Isles.
Quotas affecting catch size and determining the type of fish that can be caught are set by the EU.