The Azores is one of the best destinations in the world to dive up close and personal with blue sharks in open water, and with frequent mako shark sightings too, this is definitely one for the logbook. The best place to head is Pico, the ‘Grey Island’, which gets its name from the dominant Pico Volcano, the highest point in the Azores. While plenty of adventure is to be had topside, it’s the underwater seascapes and marine life that attracts divers to this archipelago. Best seen between July and October. Price 7 nights from £1,425pp