The Cristal Resort Hotel takes you to discover the archipelago of Zanzibar, known for its magnificent seabed, among the most beautiful in the world. Indeed, if the fine sandy beaches and the sun make the reputation of the island, it is also what happens under the surface that attracts the tourists. Zanzibar's coral reefs are among the richest in the world, with over 500 marine species. The superstar of Zanzibar is undoubtedly the dolphin. There are thousands of them living here. They come every day to play with the boats. Underwater acrobatics So, what could be better than to learn scuba diving in this heavenly setting? With a water temperature of 28 degrees and a visibility of more than 20 meters, the conditions are ideal. The show is fascinating, especially when the spinner dolphins do their underwater acrobatics.