Limitations: The channel crossing is usually tough; no pregnant woman, not a soul with neck or back accidents, and no children less than 5 are permitted. Whole face snorkels are usually not allowed. Just after Checking out The great thing about Na Pali, the boat will head west to Niihau, https://niihauboattour45544.theideasblog.com/35357177/how-snorkeling-niihau-island-can-save-you-time-stress-and-money