The 90-minute Dolphin Watch & Wildlife Adventure Cruise, offered in the late afternoon by Captiva Cruises, is the perfect way to top off a day in Sanibel and Captiva. Dolphins are seen on 95 percent of the cruises, and there’s also a good chance you’ll spot some of the walruslike manatees that call the Gulf coast home. They also offer private-sailing charters out of the South Seas Island Resort on Captiva Island.