10 underwater experiences without scuba diving

Lover’s Deep: This is the ultimate honeymoon indulgence: a private, luxury submarine where couples can spend a night under the waves. The sub can be moored wherever guests desire, from a reef off St. Lucia to a sunken battleship in the Red Sea, and the interior is styled to their preferences. The price is steep (from $230,000), but it comes with a personal chef, butler, and a tasting menu starring oysters, champagne, and chocolate fondue.