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Scenes From Prison Island (Changuu)
Extraordinary African Safaris
A short hop from Stone Town — giant Aldabra tortoises, a curious colonial history, and a quick reef snorkel make this the island's easiest half-day excursion.
Prison Island — properly Changuu — lies just off Stone Town, a 20-to-30-minute boat ride across the channel and the most popular half-day trip on Zanzibar. Despite the name, the prison built here in the 1890s never actually held prisoners; it served instead as a quarantine station, and the handsome colonial buildings remain.
Today the island is best known for its colony of giant Aldabra tortoises, a gift from the Seychelles over a century ago. Some are well over 100 years old, and visitors can walk among them in their sanctuary — an easy, charming encounter that delights families and photographers alike.
Beyond the tortoises there is a small beach, a shallow reef for snorkelling, and the ruins to explore, all in a couple of unhurried hours. It is the perfect light excursion from Stone Town, ideal for arrival or departure days when you want sea air without committing to a full beach transfer.
Prison Island is reached by a short boat trip from the Stone Town seafront, easily arranged as a half-day excursion. A small entrance fee supports the tortoise sanctuary. Visits combine the tortoises, the historic buildings, and time on the beach or snorkelling. It is a perfect add-on to a Stone Town stay or a relaxed activity on an arrival or departure day.
A 20-minute boat ride and we were walking among tortoises older than the buildings around them. The kids loved it, and it was the perfect easy morning out of Stone Town. — Guest review, TripAdvisor
Warm, sunny days, low humidity, and calm seas. The most reliable window for beaches, diving, and dhow trips.
Best overallHot and bright between the rains, with excellent water clarity and a festive high-season feel around the New Year.
Best for the beachBrief afternoon showers freshen the islands; mornings usually stay clear. Quieter and better value.
Best for valueThe wettest stretch, with heavier rain and some smaller places closing. The lowest rates of the year.
Quietest months
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