San Diego is the final stop for migrating whales as they head into the warm waters of Mexico for the winter. You can watch the giant Grays as they make their way along the California coast. The waters of San Diego are filled with marine wildlife including dolphins, sea lions and more. You will also enjoy cruising the bay and admiring the breathtaking landscape. Join one of San Diego's seafaring attractions for an amazing exploration of our natural habitat in action. Hornblower Cruises and Harbor Excursion offer afternoon mega yacht cruises. Dennis Connor's America's Cup will take you on a picnic sail aboard Yacht America. Adventure R.I.B. Rides gets you low and up close. Move in with stealth precision with Hike, Bike, Kayak for a once in a lifetime experience.