Pemba’s mythical underwater walls plummet to untold depths, adorned by huge colorful gorgonian fans; Jacque Cousteau first dove into this underwater paradise when he sailed his ship, the “Calypso,” through these waters in 1967. We descend the lush coral reefs of Pemba, seeking giant groupers, rays, and sharks. In the waters of Mafia Island, Whale sharks seasonally congregate, offering some of the best chances in the world for close viewing. Habituated pods of bottle-nosed dolphins are a feature of Zanzibar Island, and in July – August, humpback whales migrate through our waters. Diverse Coastal forests harbor endemic primates and birds, funky elephant shrews, and diminutive antelopes, and along many beaches, we can view marine turtles nesting and hatching.