Reviewed · PRISON ISLAND TOURS
Nakupenda SandBank & Prison Island (Changuu Island)
The star of this Zanzibar day is the contrast: giant tortoises and island history at Changuu, followed by bright sand, shallow water, snorkeling, and lunch at Nakupenda. The 35-minute boat crossing adds a proper sea adventure rather than a simple beach transfer.
I like the combination of wildlife and water time, and I like that Ali and Fatma can add local context about Stone Town, Zanzibar’s culture, and the island’s past. The main drawback is the $250 per-person price, which is a serious outlay for a trip that may last anywhere from two to eight hours depending on the day’s timing and conditions.
Key points to know before you book

- A two-island-style outing from Stone Town: Start by motorboat for Changuu, then continue to Nakupenda Sandbank.
- Giant tortoises are the main wildlife draw: You can visit the tortoises and learn about the island’s past.
- Snorkeling is included: Masks and fins are supplied for viewing fish, corals, and possibly starfish.
- Seafood lunch comes with the day: Seasonal fruit and soft drinks are also included.
- Ali and Fatma are the named guides: The strongest praise centers on their friendly manner, patience, local knowledge, and careful hosting.
- The trip depends on good weather: Poor conditions can lead to a new date or a full refund.
From Stone Town harbor to Changuu Island

Your day begins at the port in Stone Town, with hotel pickup available from Stone Town hotels if you request it in advance. If you are staying elsewhere on Zanzibar, transport to the starting point is not included, so you will need to arrange your own way to the seaport.
The motorboat ride to Changuu takes about 35 minutes. That crossing matters because it gives the outing a sense of place. You are not simply being driven to an attraction. You are moving out from Stone Town across the Indian Ocean, with the water and shoreline becoming part of the experience.
Boat conditions can affect the trip. The operator requires good weather, and the listed duration ranges from two to eight hours. The description presents it as a full-day outing, so I would keep much of the day free rather than schedule a tight afternoon activity afterward.
Changuu Island is also called Prison Island, and the local name is given as Changuu. The visit combines the island’s past with its best-known residents, the giant tortoises. The supplied plan allows time to walk around, see the tortoises, and hear about the island’s history.
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Meeting Changuu’s giant tortoises

The tortoise visit is the clearest reason to choose this outing instead of booking only a sandbank cruise. These are giant animals, and seeing them at close range gives the day a wildlife focus that the beach portion alone would not provide.
Your guide can explain the island’s story and help place the tortoise visit within Zanzibar’s wider past. Ali and Fatma are specifically associated with the tour, and the strongest comments about the guiding focus on clear explanations, patience, humor, and a warm personal approach. That is useful here because Changuu is more interesting when you understand what you are looking at, rather than simply taking photographs and moving on.
The island’s name, Prison Island, can create expectations of a major prison complex. Keep them measured. The information supplied promises history about the island and its past, but it does not lay out a full museum-style tour or a detailed list of surviving buildings. I would treat the historical portion as a guided introduction rather than a long architectural visit.
This stop works especially well for families and anyone who wants more than a day of swimming. Most people can participate, and service animals are allowed. Still, the outing is outdoors, on a boat, and built around walking, swimming, and snorkeling, so it suits active visitors best.
Snorkeling around Changuu before lunch
After visiting the tortoises and seeing the island, the route continues with snorkeling near Prison Island. Masks and fins are included, which keeps the extra-cost list short and makes it easier to decide on the spot if you want to get in the water.
The underwater sights described for this trip include tropical fish, colored corals, and starfish. The experience is not presented as a specialist expedition, so you should think of it as a relaxed introduction to local marine life rather than a technical snorkeling session.
I like this order. You begin on land with the tortoises and island story, then cool off in the water before reaching Nakupenda. It breaks up the day and keeps the boat trip from feeling like one long transfer.
Water visibility and sea conditions can change, of course. The trip is weather dependent, and the presence of fish, coral, or starfish is a natural condition rather than a guaranteed checklist. Bring realistic expectations, especially if you have snorkeled in places known for major reef systems.
If you are not comfortable in the water, you can still enjoy the shore, sandbank, and boat ride, but snorkeling is one of the included activities that gives the price more value. Ask the guide about the plan for the day and spend as much time in the water as feels right.
Nakupenda Sandbank and the long pause in the day

Nakupenda is the relaxation half of the outing. The setting is described as a white sandbank with clear water, open shore, and sea life nearby. The sandbank is a place to walk along the shore, swim, sunbathe, and simply stop moving for a while.
Sandbanks are shaped by tides and conditions, so the exact amount of exposed sand can vary. That is one reason the experience feels natural rather than built like a conventional beach resort. It also means you should expect an open setting with limited shade and facilities compared with a hotel beach.
The walking is part of the appeal. The tour allows time to look for crabs, enjoy the shoreline, and take in the surrounding Indian Ocean. You might also see starfish in the shallow water, though wildlife sightings cannot be promised.
This is the part of the day that photographs well, but it is better experienced slowly. Swim, walk, sit on the sand, and let the guide handle the practical flow. If your ideal Zanzibar outing includes a quiet stretch of beach after a morning of sightseeing, Nakupenda supplies that balance.
Sun protection is important. The supplied information does not list umbrellas, changing rooms, or other beach equipment, so pack the basics you need for a day in direct sun. A towel and dry clothing are sensible choices, even though they are not listed as inclusions.
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Seafood, seasonal fruit, and soft drinks

Lunch is included and centers on seafood, with soft drinks and seasonal fruit. This adds meaningful value to a boat trip because you are not left arranging food at an isolated sandbank.
The meal is part of the experience, not just a practical refueling stop. Eating seafood by the water fits the setting and gives you another chance to enjoy local flavors. The exact menu is not specified, so anyone with dietary restrictions should ask ahead rather than assume the meal can be changed.
Seasonal fruit is a particularly nice touch. The selection will depend on what is available, but it gives the lunch a fresh finish and keeps the meal tied to Zanzibar rather than to a standard packaged excursion.
Food and drinks are included, but personal expenses are not. Tips for the guide are also excluded. Carry money if you wish to tip or buy anything beyond the planned meal, while remembering that the tour price already covers the listed entrance fee, boat, snorkeling gear, lunch, fruit, and soft drinks.
What Ali and Fatma add to the outing

A private tour changes the tone of the day. Only your group participates, so you are not locked into the pace of a large coach or boat crowd. That can be valuable when you want longer at the tortoises, more time in the water, or a slower walk on the sandbank.
Ali and Fatma are the named guides for this experience. The praise attached to their work is remarkably consistent: Ali is described as fun, friendly, professional, and good at explaining history and culture, while Fatma is noted for her care, hospitality, and personable manner.
One useful detail is that the guides have also helped visitors understand Stone Town, not just Changuu and Nakupenda. If you have questions about Zanzibar’s culture or the island’s past, ask them directly. The day is better when you treat it as a chance to talk with local guides rather than as a series of photo stops.
The word private should not be confused with luxury. The included transport is a local motorboat, not a private yacht, and the sandbank is a natural setting rather than a polished resort. You are paying for a personal itinerary, local guiding, boat transport, food, and activities.
Is $250 per person fair value?

At $250 per person, this is not a bargain beach transfer. The price makes the most sense if you want several elements bundled together: boat transport from Stone Town, the Changuu entrance fee, a guide, tortoise viewing, island history, snorkeling equipment, seafood lunch, fruit, soft drinks, and a private group arrangement.
It is harder to justify if your main goal is simply lying on a beach. You could spend less on a basic beach outing, although that would not provide the same combination of Changuu, tortoises, snorkeling, and Nakupenda in one organized day.
The value also depends on group size. A private experience costs more per person than a shared boat, but the higher rate buys a more personal pace. For a couple or small group that wants its own guide and boat plan, the package may feel worthwhile. Solo visitors should compare the price carefully with shared alternatives.
The advertised booking pattern suggests this experience is often reserved far ahead. If your dates are fixed, booking early is sensible. Confirmation is provided at booking, and free cancellation is available up to 24 hours before the start time. If bad weather cancels the trip, you can receive another date or a full refund.
Timing, pickup, and practical planning

The tour starts at Stone Town Seaport. Pickup is offered from hotels in Stone Town, but you must request it and send a message in advance. Transport from other parts of Zanzibar is not included, so calculate that extra cost and travel time before comparing the $250 price with other options.
The published timing is not perfectly precise. One part of the plan is listed as four hours, while the overall experience is described as lasting two to eight hours and also as a full-day trip. I would ask for the expected departure and return time when booking, especially if you have an evening flight, dinner booking, or another tour planned.
Near public transportation and suitable for most participants are listed among the practical details. The day still includes a boat ride, shore walking, swimming, and optional snorkeling. Wear something comfortable for getting wet, and protect yourself from the sun.
The snorkeling mask and fins are included. Entrance fees are included too. Tips and personal expenses are not, and the operator does not list hotel pickup outside Stone Town as part of the package.
Who should book this Zanzibar boat trip?
I would recommend it to you if you want a well-filled day that mixes wildlife, local history, snorkeling, beach time, and food. It is especially appealing for couples, families, and small groups who prefer a private outing and enjoy asking questions of their guide.
It also suits first-time visitors based in Stone Town. In one trip, you see an offshore island, meet giant tortoises, get into the Indian Ocean, and spend time at one of Zanzibar’s best-known sandbanks.
I would hesitate if you dislike boats, have very limited time, or want a quiet luxury beach day with guaranteed shade and resort facilities. The weather requirement and changing sandbank conditions are part of the deal.
Should you book Nakupenda and Prison Island?
Book this tour if you want variety and appreciate having the day arranged for you. The strongest reason to go is the combination of Changuu’s tortoises and history with Nakupenda’s swimming and sand, while Ali and Fatma add the personal, local side of the experience.
Before paying, confirm the pickup point, expected duration, and menu requirements. If those details fit your plans and $250 is within your budget, this is a convenient private introduction to Zanzibar’s nearby islands and marine life. If you only want sand and sea, choose a simpler beach trip and save the money.
FAQ
Where does the tour start?
The tour starts at Zanzibar’s Stone Town Seaport. Pickup is available from Stone Town hotels if you request it and send a message in advance.
Is transport from other parts of Zanzibar included?
No. Transport from other parts of the island is not included. The tour begins at the Stone Town seaport.
What is included in the price?
The price includes Changuu, or Prison Island, entrance fees, round-trip motorboat transport, seafood lunch, soft drinks, snorkeling masks and fins, and a certified guide. Stone Town hotel pickup is available if arranged in advance.
How long does the experience last?
The stated duration is approximately two to eight hours. The trip is also described as a full-day outing, so confirm the expected schedule before booking other activities.
Is snorkeling equipment provided?
Yes. Masks and fins are included for the snorkeling portion of the trip.
What happens if bad weather cancels the tour?
Because the experience requires good weather, you will be offered a different date or a full refund if poor weather causes cancellation. You can also cancel for a full refund up to 24 hours before the start time.
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