Leave Mauritius' flaxen shores in the early morning, when you'll boat across the lagoon in the hopes of spotting a pod of Spinners or Bottlenose dolphins. Only a certain number of swimmers are allowed at one time and when it's your turn, be ready to jump in at your captain's call. Take your cue from the dolphins as they dart through the water, investigate the boats and swim in graceful circles below you. The best places to see dolphins is in Tamarin Bay or the Black River area, and you can even rent a private boat to really take your time.