Forget Majorca, those in the know are setting their sights on the smaller and more unspoilt Balearic islands, just a few hours flight from the UK, and only an hour ahead. Formentera is the smallest of the island group, reached by ferry from Ibiza (there's no airport). Unsurprisingly, it's the beaches and the snorkelling that people come for. The clear Mediterranean waters are perfect for a spot of underwater exploring!