These two offshore islands, also known as Gannet Rocks, are home to around 5900 pairs of Britain's largest seabird. If you've got a pair of binoculars, you can watch their swooping and diving from the shore, and if you take a boat trip, you get close enough to the island to smell them and hear their clamour.

Closely related to the booby, gannets sometimes travel as far as 500 miles on a single foraging trip.