Whitetip, grey and whale sharks, manta rays and turtles are on the wishlist, and prices for Christmas departures start from £1799pp, including flights, which according to Regaldive amounts to a saving of £193pp.

Or you could swap reindeer for camels with a Red Sea liveaboard trip on an Emperor Reefs & Wrecks northern itinerary. Departing from Hurghada, this seven-night Asmaa experience with flights costs from £859pp in the festive season (a £95pp saving).

Caribbean diving enthusiasts are invited to see in the New Year at Nabucco's Resort Speyside Inn in Tobago, offering more than 20 excellent dive-sites a few minutes’ boat-ride out. New Year prices start from from £1125pp including flights, transfers and seven nights’ B&B twin-share (a £110pp saving).