Nantucket By Water (formerly Shearwater Excursions) is a local family-run company dedicated to providing unique tours and cruises to individuals and families of all age groups. From small kids to grandparents, NBW has trips that cater to your needs and taste for adventure. Whether you take a leisurely tour around Nantucket Harbor, or a longer adventure exploring the wildlife sanctuary of Coatue or visiting the unique 5th Bend Oyster Farm, Nantucket By Water promises an exceptional experience.