The blue waves foam, disturbed by something massive in the depths. Then, in a flurry of spray, a humpback whale breaks the surface, slapping the water with its gray and white fins. This exhilarating sight is frequently afforded to guests of Cape May Whale Watcher. Helmed by Captains Jeff Stewart Sr. and Jr. alongside Captains Miles, Jack, and Jim, the company’s fleet of two provides comfortable, fast-paced passage to some of the favorite haunts of marine mammals on the eastern seaboard. Knobble-jawed humpbacks and smooth-skinned finbacks are often found frolicking and playing pranks on plankton in the teeming ecosystem of Delaware Bay and the surrounding ocean, and the Stewart family offers a guarantee that if no whales, dolphins, or porpoises are spotted, tourists receive a complimentary, never-expiring voucher for another venture. Besides their cetacean-spotting voyages, the vessels run historical lighthouse cruises and catered sunset tours.