Mnemba from Zanzibar: a snorkelling day
6 min read
Short answer: Mnemba is Zanzibar’s snorkelling day trip: a small island about 3 km off the north-east coast of the main island, surrounded by an oval reef declared a Marine Conservation Area. You reach it by boat from the beaches of Kendwa and Nungwi, and we offer four ways to go: a shared dhow, a shared catamaran, a private boat and a private catamaran. This guide explains what Mnemba is, compares the four trips and tells you what is included. We did not find an official text of the conservation area’s rules, so we list none: your crew will brief you before you get in the water.
Quick answers
- Where from: Kendwa Beach (dhow and shared catamaran) and Nungwi Beach (private boat); the private catamaran is arranged at booking.
- Length: about 7 hours (dhow, private boat, private catamaran) or 8 hours (shared catamaran).
- Shared trips: from 9:00 (dhow) and 10:30 (catamaran); hotel pickup from Nungwi and Kendwa on the dhow and optional on the catamaran.
- Minimum age: 4 on the shared catamaran; the dhow and private trips list no minimum.
- Cancellation: free up to 24 hours before on the dhow, the shared catamaran and the private boat.
What Mnemba is
According to a Tanzanian tourism website, Mnemba is a single small island about 3 km off the north-east coast of Unguja, the main island of the Zanzibar archipelago, opposite Muyuni Beach. It is roughly triangular, about 500 m across and 1.5 km around, and is surrounded by an oval reef of about 7 by 4 km declared a Marine Conservation Area. The same page says the waters are an important breeding ground for green turtles, that the island is a roost for migratory wading birds, and that whale sharks, humpback whales and dolphins frequent the deeper waters. It adds that visibility of 20 to 40 metres is the norm for diving and that striped dolphins are seen most of the year at a site called Wattambomi, which suits snorkellers.
The page also points out something that matters if you search for the place: calling it “Mnemba Atoll” is not accurate, because an atoll encircles a lagoon. Our listings use both names (“Mnemba Atoll” and “Mnemba Island”), so you will see both.
We did not find an official text on access rules or on who manages the area, so we say nothing about permits or fees. The island itself has a private lodge, according to tourism sources, so day trips snorkel on the surrounding reef.
Four ways to go
| Trip | Format | Time | Departs from |
|---|---|---|---|
| Dhow snorkelling day with lunch and drinks | Shared | About 7 hours | Kendwa Beach; traditional dhow, two snorkelling stops, Swahili lunch, drinks and hotel pickup from Nungwi and Kendwa included |
| All-inclusive shared catamaran | Shared | About 8 hours | Kendwa Beach; two snorkelling stops at Mnemba, dolphin viewing from the boat, casual fishing, seafood and mixed grill lunch, open bar |
| Private boat to Mnemba: snorkel and dolphins | Private (up to 15) | About 7 hours | Nungwi Beach; Mnemba Reef and a sandbank; food and drinks not included |
| Private catamaran to Mnemba Atoll | Private (up to 12) | About 7 hours | Open bar and a Swahili lunch included |
What is included
- Dhow: a shared full-day dhow cruise, a freshly cooked Swahili lunch (vegetable curry, basmati rice and tropical fruit), beer, wine, soda and bottled water, snorkelling equipment, an English-speaking guide and hotel pickup and drop-off from Nungwi and Kendwa. Towels and personal items are not included.
- Shared catamaran: a professional captain and crew, snorkelling equipment, two snorkelling stops, dolphin viewing from the boat, casual fishing, a seafood and mixed-grill lunch, an open bar (soft drinks, water and selected drinks), music and life jackets. Towels, sunscreen and personal expenses are not included.
- Private boat: the boat for up to 15 guests, snorkelling equipment (mask, snorkel and fins), a local captain and an assistant, life jackets, and fuel for the Mnemba Reef and sandbank route. Food and drinks are not included; hotel transfers are an optional add-on.
- Private catamaran: private use of the catamaran, an open bar with beer, wine, soft drinks and water, a fresh Swahili lunch (vegetable curry, rice, chapati, samosas and fruit), snorkelling equipment and a music system.
How to choose
- A traditional experience at a fair pace: the dhow.
- A comfortable, all-inclusive day: the shared catamaran.
- Your own group and schedule: the private boat (food not included) or the private catamaran (open bar and lunch included).
- Other Zanzibar days: the Prison Island and Nakupenda sandbank trip and the sunset dhow cruise.
Dolphin sightings are never guaranteed: the listings speak of dolphin viewing as a possibility, not a promise.
Practical notes
- Health and accessibility: the listings say the trips are not wheelchair or stroller accessible and are not recommended for pregnant travellers; infants must not sit on laps and infant seats are unavailable.
- Bring: swimwear, a towel (not provided on the dhow and the shared catamaran), sunscreen and a hat.
- Booking confirmation: the listings ask you to present your booking confirmation at the start.
For the island and how to get around, read the Zanzibar guide.
Frequently asked questions
Is Mnemba an atoll or an island?
Our listings use both words. The place is a small island with a reef around it, according to the tourism page we read.
Do I need to know how to snorkel?
The listings include snorkelling equipment; ask your crew for help if you are a beginner.
Is hotel pickup included?
On the dhow, from Nungwi and Kendwa. On the shared catamaran it is optional. On the private boat it is an optional add-on.
Can children come?
The shared catamaran sets a minimum age of 4; the other listings set none, but infants cannot sit on laps.
Will I see dolphins or turtles?
The listings mention dolphin viewing and the tourism page says green turtles breed in these waters; sightings are never guaranteed.
Can I cancel?
Free up to 24 hours before departure on the dhow, the shared catamaran and the private boat.
Sources
- Tanzania tourism website · Mnemba Island Conservation Area: location, size, reef, wildlife and visibility (a tourism page, not an official text of the rules).
- Our trip descriptions: dhow snorkelling day, shared catamaran, private boat, private catamaran.
Last checked: 27 October 2026. The rules of the conservation area were not available to us in an official source.
