Highlight your Cape Cod vacation with an unforgettable cruise aboard the Mid-Cape's only Whale Watch sailing daily from mid-April through October from picturesque Barnstable Harbor. For over 30 years, Hyannis Whale Watcher Cruises has provided whale watching eco-tours to Stellwagen Bank, for people of all ages from all over the globe. Stellwagen Bank National Marine Sanctuary consistently ranks among the top 10 places on the planet to see whales. Veteran whale watchers agree that our whale watches rank among the finest: friendly, knowledgeable staff, informative commentary, and a clean, comfortable boat. Our state of the art vessel, Whale Watcher, offers outside viewing decks, interior climate-controlled cabins, and a full service galley serving a wide range of food and beverages.