All the usual watery activities are available in Paje – swimming, diving, snorkelling, stand up paddle boarding (SUP) – but by far the most popular is kite-surfing.
Paje is Zanzibar’s main kitesurfing centre. In fact it's one of Africa's best spots, attracting enthusiasts and beginners from all around the world. Reasons for this include the constant and predictable onshore winds, the large flat-water lagoon between the beach and the reef, a shallow and sandy sea bed (ideal for beginners), big waves on the reef (for experts), warm water and the relative lack of seaweed farming. Oh yes, and because it's simply beautiful.
Most kite centres rent equipment from around US$15 per hour or US$50 to US$100 per day, and offer a wide range of courses from around US$100 for a half-day beginner's intro to around US$300 for a full-day's advanced training. There are also freelancing locals on the beach who rent out kit at bargain prices, which is fine if you know what you're doing.