One of the best activities on a cruise is to take to the water on an exciting excursion. Snorkelling around the tropical islands of French Polynesia, scuba diving in the Indian Ocean, or simply floating in the warm waters of the Dead Sea top many cruisers’ bucket lists in warm climates. Alternatively, exploring frozen islands by Zodiac or kayaking amongst mountainous icebergs are thrilling activities for a colder climate, expedition-style cruise.