Reviewed · MNEMBA ISLAND TRIPS
Mnemba Island Snorkeling and Swimming with Dolphins
Dolphins can change the whole morning. This five-hour outing from Stone Town combines Mnemba Island snorkeling with a chance to swim near dolphins, plus equipment, entry fees, fruit, and an English or German guide. I like the private-tour format and the simple $65 price, which covers several costs that can otherwise add up.
I also like the early start, since the operator says dolphin sightings can be better in the morning. The main concern is the dolphin encounter itself: one account describes two or three dolphins being pursued by about 30 people, while the reef area was small and fish were attracted with food.
The result is a tour with real appeal, but it needs realistic expectations. You may get clear water, colorful fish, and close dolphin sightings. You may also find a crowded encounter and less reef life than the dramatic name suggests.
In This Review
- Key points to know before booking
- What the Mnemba Island morning looks like
- Reaching Mnemba’s clear coastal waters
- Snorkeling the reef, with realistic expectations
- The dolphin encounter is the biggest variable
- What the private format really adds
- What is included for $65
- Who will enjoy this most
- Practical advice for a better morning
- How this tour compares with your expectations
- Should you book the Mnemba Island tour?
- FAQ
- Where does the tour start and end?
- How long does the experience last?
- What time does the tour operate?
- What is included in the price?
- Is this a private tour?
- Can I cancel for a full refund?
Key points to know before booking

- A 7:00 AM start matters: The operator advises going early for better dolphin sightings, and the official operating window runs from 7:00 AM to noon.
- Mnemba is the main setting: The trip focuses on the waters off northeastern Zanzibar, known for clear water and coral reefs.
- The snorkeling area may be small: One direct account found limited marine life, with fish drawn toward the guides by feeding.
- Dolphin encounters are not guaranteed: Weather and the animals’ behavior affect what you see.
- The $65 price covers useful basics: Snorkeling equipment, entry fees, fruit, and an English or German guide are included.
- It is a private activity: Only your group participates in the booked tour, although the dolphin area itself may still feel busy.
What the Mnemba Island morning looks like

This tour begins in Stone Town and lasts about five hours. The listed operating hours are 7:00 AM to noon, so you should expect a morning trip rather than a full-day outing.
That timing is useful in several ways. You return with much of the day still open, and the operator specifically advises an early start for dolphin viewing. If seeing dolphins is your top reason for booking, I would treat the 7:00 AM departure as important rather than optional.
The exact transport details are not provided, but pickup is offered and the activity ends back at the meeting point in Stone Town. Confirm the pickup arrangement, meeting time, and any hotel transfer details before you go. A clear plan matters when you are leaving early and heading for the coast.
Your guide speaks English or German. That should help with basic instructions, equipment, and the order of the morning. Since this is a private activity, you can expect the booking to be for your own group rather than a standard shared tour.
More Mnemba Island boat trips:
- From Kendwa: Mnemba Boat Trip and Dolphin Snorkel Adventure
★ 4.8 · 1,043 reviews - Mnemba Island: Dolphin Swim & Snorkeling with Optional Lunch
★ 4.3 · 591 reviews - Mnemba Island snorkeling and Swimming with Dolphin
★ 4.5 · 412 reviews
Reaching Mnemba’s clear coastal waters
Mnemba Island lies off Zanzibar’s northeastern coast and is known for its surrounding reef waters. The name often carries high expectations, especially for anyone picturing broad coral gardens and a huge range of sea life.
The setting itself is the strong point. The water is described as crystal-clear, and the area is associated with coral reefs and tropical fish. Snorkeling here gives you a chance to see the underwater side of Zanzibar rather than spending the morning only on a beach or boat.
Still, you should separate the wider Mnemba area from the precise snorkeling stop used on the day. One direct account found the reef section quite small, with not much to see beyond fish attracted by food from the guides. That does not mean every morning will be identical, but it is a useful warning against expecting a vast reef system at one single stop.
Conditions can change with weather, water movement, visibility, and the exact location chosen by the guide. The operator states that weather can affect the activity and may require a different date or a refund. You should think of the reef as a good opportunity, not a guaranteed underwater spectacle.
Snorkeling the reef, with realistic expectations

The snorkeling equipment is included, which makes the $65 price easier to judge. You do not need to arrange a separate mask, snorkel, or similar basic kit for this outing.
You will have the chance to look for coral and tropical fish in the waters around Mnemba. For a first snorkeling trip, that may be enough. The clear water and warm Zanzibar setting can make the experience enjoyable even when the reef itself is modest.
I would be more cautious if you are an experienced snorkeler hoping for a long, varied session. The available account describes a small reef area and limited natural activity. It also says fish were attracted by guides feeding them. That can create an immediate burst of fish around the group, but it is not the same as seeing marine life behaving naturally across a healthy reef.
This distinction matters. If you mainly want time in the water, a few fish, and the chance to practice snorkeling, the stop could suit you. If your priority is coral quality, abundant species, or a quiet look at the sea, you may find it underwhelming.
Ask the guide how long you will have in the water and where the group will snorkel that day. Those details are not specified in advance, and the answer may help you decide how much to expect from the reef portion.
The dolphin encounter is the biggest variable

Swimming near dolphins is the headline attraction, but it is also the part least under your control. Dolphins move freely, and sightings depend on the animals, sea conditions, and timing.
The operator explains that you may see more dolphins early in the morning, but also notes that the day’s weather matters. That is practical advice. A 7:00 AM start improves your chance, but it cannot guarantee a close encounter or a particular number of dolphins.
One account describes only two or three dolphins being pursued by around 30 people. That raises a fair concern about crowding and the quality of the encounter. Even if you see dolphins, the scene may not feel calm or personal if many boats and swimmers gather in the same area.
I would not book this expecting a private moment with dolphins. The tour itself is private for your group, but that does not necessarily make the wider dolphin area private. Other operators may be working nearby, and the animals may attract several groups at once.
There is also an ethical question. A dolphin encounter is best when the animals are given room to choose their distance and direction. If the group is chasing them, the experience can feel hurried and uncomfortable. You should watch how the guide approaches the animals and avoid forcing contact, blocking their path, or trying to keep pace.
The operator’s response to concerns about dolphin numbers points to early morning and weather. That is useful, but it does not remove the basic uncertainty. Book this portion as a possible sighting, not a promise.
More snorkelling trips:
- Zanzibar: Mnemba Island Dolphin and Snorkeling Tour
★ 4.1 · 352 reviews - Zanzibar: Safari Blue Lagoon Trip with Snorkeling and Lunch
★ 4.5 · 336 reviews - Matemwe: Mnemba Island Dolphin & Snorkeling Boat Trip
★ 4.3 · 152 reviews - Zanzibar: Mnemba island Snorkeling & Boat Tour with Lunch
★ 4.3 · 132 reviews
What the private format really adds

The private format is one of the tour’s better features. Only your group participates in the booked activity, so you are not automatically placed with a large mixed party for the whole morning.
That can make the practical side easier. Your group may be able to ask questions, get help with the equipment, and move through the schedule without waiting for unrelated passengers. It may also suit families, couples, or friends who prefer a more personal outing.
The private label should not be confused with total solitude. Mnemba’s waters can still attract other boats and groups, especially during dolphin viewing. The snorkeling stop may also be shared in the wider sense, even if your booked group is separate.
I would value the private arrangement most if you are new to snorkeling, have different comfort levels in the water, or want an English or German guide focused on your party. If you are mainly paying for exclusivity at the dolphin site, keep expectations modest.
What is included for $65

At $65 per person, the price is reasonable if you use the included services. The package covers snorkeling equipment, entry fees, a guide in English or German, and fruit.
The inclusion of entry fees helps simplify the morning. Equipment is another real saving, especially if you are only snorkeling once during your Zanzibar stay. Fruit is a small touch, but useful after time in the water and an early start.
The value depends heavily on the dolphin and reef portions. If the water is clear, you see dolphins, and the reef offers good fish life, the price looks attractive for a five-hour private outing. If the reef stop is brief and the dolphins are distant or surrounded by boats, the value becomes less convincing.
Personal expenses are not included, and tips are also separate. The supplied information does not list meals, drinks beyond the provided fruit, or any additional personal purchases. Bring whatever personal spending money you need, but do not assume the tour includes more food than stated.
For budget planning, compare the $65 with the cost of arranging equipment, transport, entry, and a guide separately. The bundled price is convenient. The question is not simply whether it is cheap, but whether the marine encounters meet your reason for coming.
Who will enjoy this most

I would recommend the tour most strongly to someone who wants a simple introduction to Zanzibar snorkeling and likes the idea of adding dolphin watching to the same morning.
It may suit you if:
- You are staying in or near Stone Town and want pickup assistance.
- You prefer a morning activity that ends by around noon.
- You want equipment and entry fees handled in one price.
- You are a beginner or casual snorkeler.
- You value a private booking for your own group.
- You accept that dolphin sightings and reef quality can vary.
Families may appreciate the private setup, but the information provided does not specify age limits, swimming requirements, or child equipment. Ask before booking if a child is joining or if anyone in your group is not a confident swimmer.
Strong snorkelers may want more information before committing. Ask about the reef’s size, water time, and expected conditions. The available description supports a scenic, accessible outing, not a long specialist snorkeling session.
Practical advice for a better morning

Book as early as your schedule allows, especially if dolphins are the main goal. The operator specifically connects early morning trips with a better chance of seeing more dolphins.
Set aside about five hours, including the Stone Town departure and return. Since the activity ends back at the meeting point, avoid scheduling an important appointment immediately afterward. Boats and weather do not always follow a tight city timetable.
Confirm pickup details before the morning of departure. Pickup is offered, but the exact pickup area and timing are not provided. A short message to Ntonji Tours and Safaris can prevent confusion.
Bring personal items not listed as included. The package mentions snorkeling gear and fruit, but not personal expenses, tips, or other supplies. You should clarify what you want to bring and what the operator supplies before setting out.
Pay attention to the guide’s instructions around the dolphins. Let the animals determine the distance when possible, and avoid treating the sighting as a race. A respectful encounter may be shorter, but it is better than a frantic chase.
Finally, keep a flexible attitude. Poor weather can cancel or alter the experience. If that happens, the policy offers a different date or a full refund. You can also cancel for a full refund up to 24 hours before the start time, but changes or cancellations inside 24 hours are not refunded.
How this tour compares with your expectations
The strongest version of this outing is easy to picture: an early pickup, a boat ride toward Mnemba, clear water, a reef session, dolphins nearby, fruit afterward, and a return to Stone Town before the afternoon.
The weaker version is also possible: a small snorkeling area, fish gathered by feeding, only a few dolphins, and a crowded viewing scene. The supplied account gives you enough warning to consider that outcome before paying.
That balance is important because the tour’s title makes two big promises. Mnemba suggests excellent snorkeling, while dolphins suggest a close wildlife encounter. Both can happen, but neither is fully guaranteed by the information provided.
I would judge the trip as a good-value chance rather than a sure thing. The operator, Michael Eliud Ntonji, directly advises an early start and points to weather as a factor in dolphin numbers. Take that advice seriously, but keep your expectations flexible.
Should you book the Mnemba Island tour?
Book it if you want a convenient, private morning that combines snorkeling and a chance to see dolphins for $65. The included equipment, entry fees, fruit, and guide make the price fair, especially for casual snorkelers and first-time visitors to Zanzibar.
Think twice if you want a quiet, conservation-focused dolphin encounter or an extensive reef with large numbers of fish. The report of a small reef, food-attracted fish, and dolphins pursued by a large crowd is the key caution.
My practical call: book only if you are happy with a possible dolphin sighting and a modest snorkeling stop, not a guaranteed personal encounter. Choose the earliest available start, confirm pickup, ask about the day’s sea conditions, and let the animals set the pace.
FAQ
Where does the tour start and end?
The tour starts in Stone Town, Zanzibar, Tanzania, and ends back at the meeting point.
How long does the experience last?
The tour lasts approximately five hours.
What time does the tour operate?
The listed operating hours are Monday through Sunday from 7:00 AM to 12:00 PM.
What is included in the price?
The price includes snorkeling equipment, entry fees, an English and German guide, and fruit.
Is this a private tour?
Yes. Only your group participates in the private activity.
Can I cancel for a full refund?
Yes. You can cancel at least 24 hours before the experience start time for a full refund. Poor weather or failure to meet the minimum number of participants may also result in a different date or a full refund.
More Dolphin Trips
- Dolphin tour, Jozani Forest, Jambiani Kuza Cave, Paje Beach &The Rock restaurent
★ 4.5 · 164 reviews - Private Dolphin Tour and Snorkeling at Mnemba Island reef
★ 4.0 · 104 reviews - Mnemba dolphin & snorkel: from matemwe, pwani, kwingwa, Uroa
★ 4.7 · 74 reviews - Private/Sharing: Snorkeling with Dolphins Sandbank in Mnemba
★ 5.0 · 62 reviews
Just added around Zanzibar
- Spice Tour of Zanzibar★ 4.5 · 3 reviews
- Zanzibar : Stone Town Tour,history without transport★ 4.8 · 3 reviews
- Zanzibar: 3-Day Northern Safari with Flights Included★ 4.8 · 3 reviews
- Jozani Forest, kuza cave and mtende beach★ 5.0 · 3 reviews
- Starfish Beach; The Rock; Kuza Cave; Paje Beach; Salaam Cave Tour★ 4.5 · 3 reviews
- ZANZIBAR: Stone Town and Jozani Forest Guided Tour★ 4.0 · 3 reviews
- Zanzibar: African Sunset Boat Party in Zanzibar Music, Views★ 4.3 · 3 reviews
- Joazani forest & Spice farm with lunch★ 5.0 · 3 reviews
Mnemba Island Trips, compared.

Mnemba Boat Trip and Dolphin Snorkel Adventure
Read our review →
Mnemba Island: Dolphin Swim & Snorkeling with Optional Lunch
Read our review →
Mnemba Island snorkeling and Swimming with Dolphin
Read our review →
Matemwe: Mnemba Island Dolphin & Snorkeling Boat Trip
Read our review →
Mnemba Island, Prison Island and Salaam Cave Tour
Read our review →
Mnemba island Snorkeling & Boat Tour with Lunch
Read our review →
Private Dolphin Tour and Snorkeling at Mnemba Island reef
Read our review →Browse the lists this tour appears in

