Experience Waikiki marine life tours and discover Hawaii’s vibrant underwater world. Snorkel with Hawaiian green sea turtles and swim among colorful tropical fish in crystal-clear waters. In winter, witness humpback whales on their annual migration from the comfort of a scenic cruise. Departing from Waikiki Beach and nearby harbors, choose from catamaran sails, eco-tours, and small-group excursions for unforgettable encounters with Hawaii’s marine life.