Full-Day Charter Cruise St.Croix. Some of the best snorkeling spots in St Croix St. Thomas & St. John are accessible only by boat! Beat the crowds and enjoy a private day snorkeling charter with some snorkel gear provided. Pick your own destinations or let the captain help you choose. Swim with sea turtles, rays, and starfish, or just grab a float and relax in the sun- it’s your vacation! Private charter; no need to share your space with strangers. $1950 for up to 12 guests. Contact us for seasonal pricing.