What to Pack for Snorkeling and Diving in Zanzibar

Why This Day Packs Differently From a Beach Day

On a beach day you can retreat to shade, a room or a bar when the sun gets too much. On a boat you often cannot: many day boats offer a small shaded bench at best, and the rest of the deck is exposed for the whole crossing. That turns sun protection from a comfort item into the core of the kit.

The second difference is that everything you carry gets wet. Spray, drips from swimmers and the occasional splash mean a normal daypack is the wrong container, and a phone in a pocket is a phone in salt water. The third difference is the return leg: sitting in wet swimwear while the boat moves at speed is genuinely cold, even on a hot island.

Operators differ in what they supply, so treat your own bag as the part you control and ask before departure whether towels, drinking water, masks, fins and shade are provided. That single question prevents both overpacking and being caught short at the reef.

The Core Swim Kit

Start with a swimsuit you can move in, then add quick-dry shorts or a swim skirt for the boat and the beach between sites. The layer that earns its place most is a rash guard or long-sleeved swim top: it reduces how much sunscreen you need to reapply on your back and shoulders during long sessions in the water, and it keeps a wet shirt from clinging uncomfortably on the ride back.

One dry layer matters more than a second swimsuit. A second swimsuit only gets wet too; a dry t-shirt, thin long-sleeve top or light cover-up gives you something to change into once you are out of the water. Choose fabrics that dry quickly rather than heavy cotton, which stays damp and holds salt.

If you plan several water days, two swimsuits let one dry while you wear the other, since humid island air slows drying overnight. For a single day out from a resort, one swimsuit plus a rash guard plus one dry cover-up is usually enough.

Sun Protection for the Water

The sun over Zanzibar is strong and the sea breeze hides how much you are catching, and reflection off the water adds to direct exposure. Pack a high-SPF sunscreen, a wide-brim hat that will not blow off, polarised sunglasses to cut glare off the surface, and an SPF lip balm that you can reapply while your hands are wet.

A mineral sunscreen based on zinc oxide or titanium dioxide is an editorial choice many snorkelers prefer, since it avoids ingredients such as oxybenzone that are linked to coral damage. This is a product preference, not a legal requirement in Zanzibar, and local shops stock a limited range, so bring the formula you trust.

The CDC packing list for Tanzania, including Zanzibar, lists sunscreen with UVA and UVB protection, sunglasses and a wide-brim hat among the basics, which is a useful reminder that the hat and glasses are sun protection rather than accessories. Reapply sunscreen more often than you think you need to, particularly after swimming and between snorkel sessions.

Personal Mask, Snorkel and Fins: Fit Versus Luggage Space

The case for bringing your own mask is fit: a mask that seals properly makes the difference between a relaxed hour in the water and a constant leak. If you already own one that works, it takes little space and is worth carrying. A snorkel is bulky for what it does, and many day boats supply one.

Fins are the real trade-off. Full-length fins are heavy and awkward in a suitcase, while travel fins or short fins sacrifice some propulsion for packability. If your trip combines diving with land travel, renting on the island often makes more sense than carrying fins across the country. Rented equipment varies in condition between operators, so if you are fussy about fit, ask what is supplied before you decide what to bring.

If you are diving rather than snorkeling, confirm whether the operator expects you to bring certification documents and a logbook, and whether a dive computer is included. Packing a small mask-defog solution or using spit are both common approaches; this is a personal habit rather than a requirement.

Water Shoes, Dive Booties or Sandals

Footwear on a Zanzibar reef day follows the surfaces you meet, not a single generic shoe. Boat decks get hot, beach sand gets hotter, and the reef flat itself is sharp. A pair of reef or water shoes with a firm sole handles rocky entries, shallow reef flat and the walk from vehicle to launch point, and it is the item most first-timers leave behind.

If you are diving in booties, they do double duty: they protect your feet on deck and inside the fin pocket, so you can leave the water shoes at the hotel. If you are snorkeling from a boat and never wade over coral, grippy sandals that stay on your feet are usually enough. Flip-flops are fine around the resort but are a poor choice for a wet, moving deck.

Whatever you choose, test the fit with wet feet before you travel. A shoe that rubs when dry will rub more when soaked and sandy. Sturdier footwear also matters in Stone Town, where alleys are uneven and pavement is often hot; readers who want the town side of the wardrobe can check what to wear in Zanzibar City in November, though the short rains influence that month more than a typical reef day.

Footwear is one of the few items that cannot be improvised at the jetty, since options near launch points are limited. Packages from operators in the safari and beach market commonly list swim shoes and a waterproof bag, which reflects how often travellers find themselves without them.

Dry Bag and Waterproof Phone Pouch

A dry bag is the single most useful piece of non-swim gear on a boat day. A roll-top bag of moderate size holds a towel, a dry layer, sunscreen, a phone and documents, and it doubles as a soft pillow when you are sitting on a hard bench. Everything that must stay dry goes inside it, and everything wet stays out.

A waterproof phone pouch is smaller and more specific: it keeps the phone usable for photos on deck and around the reef without risking a saltwater soak. Check the seal before you leave the room, and test it with a tissue inside before trusting it with the phone.

Keep travel documents, cash and cards in a separate small waterproof pouch inside the dry bag rather than in a pocket, since boat spray reaches more places than people expect. Cards and currency also benefit from staying dry, and a little organisation means you are not digging through wet gear at the jetty.

A compact towel that dries fast takes less space than a hotel towel and is kinder to a small bag. Some operators provide towels and some do not, so confirm rather than assume, and pack one small towel if the answer is unclear.

The Warm Layer for the Ride Back

This is the item that surprises people most. A wet rash guard or swimsuit, plus wind from a moving boat and the drop in temperature that comes with spray, makes the return leg feel far cooler than the beach you left. A dry long-sleeve top, a thin fleece, a sarong or a light windbreaker solves it, and a towel wrapped around the shoulders helps more than it sounds.

Pack that layer inside the dry bag so it stays dry until you need it, and change out of wet swimwear as soon as the last site is finished. A spare pair of dry shorts or a light dress makes the transition from boat to vehicle far more comfortable than sitting in wet fabric for the transfer back.

Some travellers also bring a light buff or scarf, which doubles as neck shade, a hair cover and a small warmth layer. None of this is heavy, which is exactly why the wet-ride warmth layer belongs on the list alongside the sun protection rather than instead of it.

Small but Easily Forgotten

Motion-sickness tablets are worth packing if boats do not agree with you, and they work best when taken before departure rather than once you already feel unwell. A power bank keeps a phone alive through a long boat day, since charging points are rare on deck and a full day of photos drains a battery quickly.

Oral rehydration salts are small, light and useful after hours in sun and salt water, and a refillable water bottle is worth carrying if the operator provides drinking water on board. Confirm that before you rely on it, and bring your own if the answer is uncertain.

A hat strap or clip is a tiny addition that prevents a wide-brim hat from becoming a souvenir of the wind. A simple carabiner for clipping the dry bag to a rail or bag strap is another small item that pays off on a crowded deck.

Health and First-Aid Items to Run Past a Travel Clinic

Health items are a conversation, not a checklist you can copy. Insect repellent, antihistamine, rehydration salts, blister care and basic wound supplies are all reasonable to pack, but which ones matter for you depends on your health, your itinerary and any medication you take. A travel clinic is the right place to settle those questions before you fly.

The CDC packing list for Tanzania, including Zanzibar, covers prescription medicines, repellent, sunscreen, sunglasses with a hat, first-aid supplies and rehydration salts as part of a healthy travel kit, and recommends checking with a doctor about what is most relevant. Whether antimalarial medication or any vaccination is appropriate for your trip is a clinical decision, so follow the advice you are given rather than a general packing guide.

Carry prescriptions in their original packaging with copies of the prescription and a written list of generic names, and keep them in hand luggage on the flight out. Pack extras of anything essential, since replacement is harder to arrange on the island than at home.

A Three-Day Reef Trip Versus a Single Day Out

For a single day trip from a resort, a compact version works: swimsuit and rash guard, dry cover-up, one light warm layer, water shoes, a hat, sunglasses, high-SPF sunscreen, lip balm, a small dry bag, a waterproof phone pouch, a towel, motion-sickness tablets if needed, and a water bottle. That fits in a small daypack or dry bag and needs no checked luggage at all.

A three-day reef-focused stay, by contrast, justifies duplicates. Two swimsuits let one dry each evening, two rash guards avoid wearing damp fabric each morning, and a second dry cover-up means you are not doing laundry between boat days. Add a spare towel, a slightly larger dry bag, and a small first-aid and medicine pouch that stays in the room.

The middle case, a longer holiday with one or two water days, is best served by keeping the day-trip kit packed separately from the rest of your luggage. That way you can leave the island wardrobe behind in the room and carry only what the boat needs. Inland days follow different logic: what to pack for a Jozani Forest day trip involves humid forest rather than open water, so the sun-and-spray kit does not transfer wholesale.

What to Leave Behind

Leave the heavy camera bag ashore unless you have a specific reason to bring it; a compact waterproof camera or a phone in a pouch usually does the job on a wet deck. Leave expensive jewellery, excess cash and anything you would hate to soak. A single card and enough cash for the day is plenty.

Skip the second pair of flip-flops in favour of one pair of water shoes, and skip bulky cotton clothing that dries slowly. Heavy jeans, thick sweatshirts and formal shoes have no role on a boat day. Leave the drone unless your operator has confirmed in writing that it is allowed, since rules vary and this guide does not cover them.

Leave the full toiletry bag in the room as well. A small pouch with sunscreen, lip balm, repellent and a couple of plasters is enough, and it keeps the dry bag light enough to handle comfortably.

Before You Go

Check the local marine forecast and wind conditions in the days before your trip rather than relying on a general seasonal picture. Conditions on the water can change independently of the weather in town, and operators sometimes adjust or reschedule departures when the sea is rough. Treat any pattern you read about the seasons as a historical tendency, not a prediction for your specific date.

Confirm with your operator what is provided on board, including shade, water, towels, masks and fins, and what time you need to be at the launch point. If you are travelling in the months shaped by the long rains build-up, expect quick-drying clothing and a compact rain layer to be more useful than they would be in the drier months; what to wear in Zanzibar City in March is focused on those town-and-beach conditions.

Pack the night before so nothing needs to dry in the morning, and lay the warm layer and dry cover-up on top of the dry bag where you can reach them on the return leg. A five-minute check of your bag against the conditions is more useful than a longer list you cannot find at the jetty. If you are travelling in the hotter, more humid stretch of the year, what to wear in Zanzibar City in January covers how that changes the clothing side of the day.

Plan Your Reef Day

The packing logic for a Zanzibar snorkeling or diving day comes down to three decisions: what protects you in the water, what keeps your gear dry, and what keeps you warm and comfortable once you are wet. Get those right and the rest is detail.

Build the bag around a rash guard, a dry cover-up and a warm layer, add water shoes and sun protection, and secure everything in a dry bag with a waterproof pouch for your phone. Confirm what the operator supplies before you go, and check the forecast rather than trusting last season's weather.