Reviewed · PRISON ISLAND TOURS
A Half Day Private Prison Island Tour
The tortoises are the real stars. This private half-day outing from Zanzibar City combines a short wooden motorboat ride with the Aldabra giant tortoise sanctuary, old prison ruins, peacocks, antelopes, and time beside the sea. I like the easy boat trip from Stone Town and the chance to see the enormous tortoises at close range. I also like having a private guide, since your group can set the pace. The main drawback is that the beach is small and can be crowded with boats, so this is not a dependable full beach day or snorkeling trip.
At $84 per person, the experience makes the most sense if you value private transport, a guide, and a simple half-day outing from Stone Town. I would book it for the tortoises and the island’s unusual past, then treat swimming as a bonus. Weather can shorten the visit, and the tour is less appealing if your main goal is a quiet stretch of sand.
In This Review
- Key Points Before You Book
- Leaving Stone Town by Wooden Motorboat
- Changu Island and the Prison Ruins
- Meeting the Aldabra Giant Tortoises
- Peacocks, Antelopes, and the Island’s Other Wildlife
- Swimming at the Small Island Beach
- What the Private Format Adds
- Is $84 Per Person Fair Value?
- Who Will Enjoy This Short Zanzibar Excursion?
- Practical Tips for a Better Visit
- Should You Book the Prison Island Tour?
- FAQ
- How long does the Prison Island tour last?
- Where is Prison Island located?
- What animals can you see on Prison Island?
- Can you swim at Prison Island?
- Is this a private tour?
- What happens if bad weather cancels the tour?
Key Points Before You Book

- A 25 to 30-minute boat ride carries you from Stone Town to Changu Island, also called Prison Island.
- Aldabra giant tortoises are the highlight, and you can observe them and take photographs.
- The 1893 prison ruins offer a brief historical stop, but they are not a large, fully preserved prison complex.
- Swimming is possible, yet the small beach may be crowded with boats and other visitors.
- Private transport and a private guide mean only your group takes part.
- Weather matters, since poor conditions can cancel the outing or cut it short.
Leaving Stone Town by Wooden Motorboat

The tour begins in Zanzibar City, with pickup offered and private transportation included. From Stone Town, you travel by wooden motorized boat toward Changu Island. The crossing takes about 25 to 30 minutes, which is short enough to feel easy but long enough to give you open-water views and a different angle on Zanzibar’s coast.
I like this part because it adds a sense of place without turning the tour into a long transfer. You are not spending half the day on the road. Instead, the boat ride gets you directly from the old town to the island that gives the outing its name.
The boat transfer also shapes your expectations. This is a compact island trip, not a large resort excursion with extensive facilities and a full schedule of water sports. The total activity is advertised at about two to three hours, with the island visit itself listed at roughly two hours. That is enough time for the main sights, photographs, and perhaps a swim, but not enough for a slow all-day beach stay.
Since the tour depends on the weather, keep your plans flexible. One departure took place in good weather that worsened at the island, reducing the visit to about an hour and a half. The operator cannot control changing conditions, but you should still understand that the advertised duration is approximate rather than guaranteed.
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Changu Island and the Prison Ruins

Changu Island is better known as Prison Island because of the prison buildings associated with General, or Sir William, Lloyd Mathews. The ruins were built in 1893 to house criminals from Zanzibar. That history gives the island more weight than a simple animal sanctuary and beach stop.
The ruins are not the largest attraction here. You will see remains of the old prison, take photographs, and hear about its purpose from your guide. I would approach this stop as a short historical visit rather than a long museum experience. If you expect a grand, fully preserved prison with many rooms and exhibits, you may find it underwhelming.
Still, the setting makes the ruins worthwhile. A building meant for confinement now sits on a small island visited for its sea views and wildlife. That contrast is part of the appeal. The stop also helps explain the island’s name, which would otherwise seem odd once you arrive and see a place centered on tortoises and swimming.
The guide is important here. With a private tour, you can ask for more background about the prison or move on when you have seen enough. No guide names are provided for this experience, but a private guide is included in the price.
Meeting the Aldabra Giant Tortoises

The Aldabra giant tortoise sanctuary is the main reason I would choose this tour. The tortoises were brought to Zanzibar from the Seychelles as a gift to the Sultan of Zanzibar from the British Governor of Seychelles. The tour information gives 1915 as the arrival year in one place and 1919 in another, so treat the exact date with caution. The broader story is clear: these giant tortoises became one of Prison Island’s defining attractions.
You can observe the tortoises at the sanctuary and take photographs. This is a more direct encounter than simply looking at animals from far away. Their size, slow movements, and age give the visit a memorable quality, especially if you have never seen Aldabra giant tortoises before.
I would allow the tortoises to set the pace of this part of the outing. The prison ruins can be seen fairly quickly, but the animals deserve time for careful observation. Your guide can help you find them and explain what you are seeing, while the private format lets you pause for photographs without having to follow a large group.
This is also the strongest part of the tour for families and animal lovers. Children may enjoy the tortoises more than the prison history, and adults get an unusual wildlife experience close to Stone Town. The sanctuary gives the trip a clear purpose, even if the beach is crowded or the weather changes.
Peacocks, Antelopes, and the Island’s Other Wildlife

The tortoises receive most of the attention, but they are not the only animals on Changu Island. You may also see peacocks and antelopes during the visit. These sightings add variety, although the supplied details do not promise a particular number of animals or a formal wildlife presentation.
I would keep expectations sensible. This is not a safari, and the island visit is short. The extra species are pleasant additions rather than the main event. If you enjoy noticing smaller details, look beyond the tortoise sanctuary and pay attention to the wider island surroundings.
The mix of animals, ruins, and water is what makes the outing work. None of these parts alone would fill a long day, but together they create a compact Zanzibar experience with several different themes. You get history, wildlife, a boat ride, and the option of swimming without committing to a full-day excursion.
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Swimming at the Small Island Beach

The tour includes time to swim in the clear water beside Prison Island. This can be a refreshing finish after walking around the ruins and sanctuary. If conditions are calm and the beach is not too busy, you may enjoy a short swim and a look at the water around the island.
But this is where the promotional picture can create the wrong idea. The beach is not necessarily a broad, peaceful place for spending the day, and there may be many boats around the small swimming area. That makes swimming difficult at busy times and means you should not book this tour mainly for snorkeling.
The beach is best treated as an optional extra. I would bring suitable swimwear if you want the chance to enter the water, but I would not depend on a long, quiet swim. You can also ask your guide for advice on where swimming or snorkeling may be practical on the island.
This distinction matters when judging the $84 price. If the cost is paying for a private island transfer, guide, tortoise visit, and historical stop, the package can be reasonable. If you are paying mainly for a beach day, the value is weaker.
What the Private Format Adds

Only your group takes part in this private activity. That changes the feel of a short tour. You do not have to match the interests of a large mixed group, and you can ask the guide to spend more time with the tortoises or explain the prison ruins in greater detail.
Private transport is also included, along with bottled water and all fees and taxes. Those details reduce the number of small costs you need to think about during the outing. Personal expenses are not included, so plan to pay separately for anything outside the stated package.
The private format is most useful for couples, families, or a small group of friends who want a simple outing from Stone Town. It is less valuable if you are comfortable joining a larger shared boat and mainly want the lowest possible price.
The tour is booked an average of 71 days ahead, which suggests you should not leave it until the last minute if your dates are fixed. Confirmation is provided at booking, and mobile tickets are accepted. Those are practical advantages, especially if you are arranging several activities around a Zanzibar stay.
Is $84 Per Person Fair Value?

At $84 per person, this is not the cheapest possible way to reach Prison Island. The price needs to be judged against what you receive: private transportation, a private guide, bottled water, included fees and taxes, and the boat trip to and from Changu Island.
I see fair value here for people who want convenience and a private pace. You are buying a managed experience rather than trying to arrange the boat and island visit separately. The value improves if your group uses the guide well, asks questions, and spends time with the tortoises instead of rushing through the stops.
The value drops if bad weather shortens the outing or if you expect a full beach experience. One visit lasted only about an hour and a half because the weather changed. The operator offered the choice to stay at the beach or swim, but the group chose to leave. That situation shows why you should keep the tour flexible and understand that weather can affect both duration and enjoyment.
Free cancellation is available up to 24 hours before the start time. Within 24 hours, changes are not accepted and the payment is not refunded. If poor weather forces cancellation, you are offered another date or a full refund. Because this is a weather-sensitive boat trip, that policy is useful, but it does not protect you from every inconvenience caused by conditions that change after departure.
Who Will Enjoy This Short Zanzibar Excursion?

I would recommend this tour most strongly to:
- First-time visitors based in Stone Town who want a quick island outing.
- Families who want to see large tortoises without committing to a full-day trip.
- Couples and small groups who prefer private transport.
- History fans who enjoy a short stop at unusual old ruins.
- Visitors who want a boat ride and wildlife encounter in one package.
I would be more cautious if your main goals are snorkeling, a broad sandy beach, or a long, quiet swim. The small beach can be crowded with boats, and the tour does not promise a dedicated snorkeling session.
It also suits people who like variety. In a few hours, you can move from Stone Town to open water, then from prison ruins to giant tortoises and a possible swim. That is a good use of a half-day, provided you accept that each part is fairly brief.
Practical Tips for a Better Visit
Use the private guide to shape the visit. Ask for more time with the tortoises if that is your priority, and ask where swimming is safest or most practical before changing into swimwear.
Bring a phone or camera for the tortoises, ruins, and boat ride. Bottled water is included, but personal expenses are not, so carry anything else you may need without assuming it is part of the package.
Do not judge the entire outing by the beach alone. The beach may be crowded, while the tortoise sanctuary provides the strongest and most distinctive experience. If swimming conditions are poor, the island still offers wildlife and history.
Keep the rest of your day lightly planned. The stated duration is two to three hours, but weather can shorten the visit. A flexible schedule will make the outing feel less rushed if the sea or sky changes.
Should You Book the Prison Island Tour?
Book it if you want a private, easy half-day from Stone Town focused on Aldabra giant tortoises, a short boat ride, and a little island history. The tortoise sanctuary is the clear highlight, and the private guide gives you more control than a standard group outing.
Skip it if you want a proper beach day or a serious snorkeling trip. The small beach can be crowded with boats, and the prison ruins are modest rather than spectacular. At $84 per person, the tour is best value when you see it as a private wildlife and history excursion with swimming available, not as a beach holiday in miniature.
FAQ
How long does the Prison Island tour last?
The experience takes approximately two to three hours. The boat ride from Stone Town to Changu Island takes about 25 to 30 minutes, and the island visit is listed at about two hours.
Where is Prison Island located?
Prison Island, also called Changu Island, is about 16 kilometers from Stone Town in Zanzibar City, Tanzania.
What animals can you see on Prison Island?
The main animals are Aldabra giant tortoises. You may also see peacocks and antelopes on the island.
Can you swim at Prison Island?
Yes. The tour provides an opportunity to swim in the clear water beside the island. The beach is small and may have many boats around it, so swimming conditions can vary.
Is this a private tour?
Yes. Only your group participates, and a private guide and private transportation are included.
What happens if bad weather cancels the tour?
If the experience is canceled because of poor weather, you can choose another date or receive a full refund. You can also cancel up to 24 hours before the start time for a full refund. Cancellations within 24 hours are not refunded.
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