Rare 'fairy circles' spotted in underwater forests off Scotland

Scientists have captured rare footage of unusual circular formations made of seagrass on the seabed in the Sound of Barra in the Outer Hebrides. Known as seagrass “fairy circles”, the rings are naturally formed and have rarely been seen in Scotland’s waters. The images were taken as part of a new report on seagrass habitats, which have declined over the past century due to disease, pollution and coastal development. Researchers do not yet know exactly how the circles form.