Sunken World War II warships in Scapa Flow harbour offer fantasticdiving opportunities, or take a ferry to either Westray or Hoy for spectacular cliffside walks and the chance to see puffins and other seabirds at the bird preserves on each island.
With world-class diving, a fantastic roll call of birds and a couple of marine national parks ( Mnazi Bay-Ruvula Estuary Marine Park and Mafia Island Marine Park), coastal Tanzania is no slouch in the wildlife department.