What to Pack for a Tortuga Island Boat Tour

What actually goes in the bag for a Tortuga Island day?

Pack for three environments in one day: an open boat deck with no shade, several hours in salt water, and an uninhabited beach with no shop. The short version is sun protection applied before boarding, quick-dry clothing, a dry bag for a phone and cash, sandals you can lose without grief, and small notes for the paid restroom.

Most packing lists for Costa Rica beach days are written for places where you can walk to a pharmacy at eleven in the morning. Isla Tortuga is not that. It is an uninhabited island in the Gulf of Nicoya, protected as part of the Islas Negritos Biological Reserve, with no accommodation, no roads and nothing resembling a shop. The boat crews bring a kitchen and hammocks. Everything else arrives with you or does not exist for the length of the day.

The second constraint is space. You are on a boat with a fixed number of seats and a fixed amount of dry storage. Every operator we work with tells clients the same thing at boarding: one small bag per person. The people who show up with a wheeled case and a full beach kit end up carrying it around the sand for five hours. The people who show up with a single dry bag and a towel have a better day.

The third constraint is water. Not just the sea. Spray comes over the bow of a speedboat on a normal gulf morning, so anything that lives in an outer pocket gets wet whether or not you go swimming. Plan for that up front and the rest of the list falls out of it.

Why is sun the number one packing problem on this trip?

Isla Tortuga sits under ten degrees of latitude from the equator, and you spend the day surrounded by two reflective surfaces: white sand and open water. The boat deck usually has partial shade at best. Most people who get burned on this trip get burned during the crossing, before they have even reached the beach.

The mechanism is simple and people underestimate it every season. On the water you get direct overhead sun plus a second dose bounced off the surface, and the wind on a moving boat removes the heat signal your skin normally uses to tell you it is time to move. You feel cool and comfortable at 25 knots. You are still burning. The same applies during the snorkel: floating face down in 28-degree water feels pleasant right up until you get out and find your calves and the backs of your shoulders have taken an hour of unfiltered sun.

The gear that solves this is boring and it works. A rash guard removes the entire shoulder and back problem in one move, which matters because those are exactly the surfaces you cannot reach to reapply sunscreen on yourself. A hat with a cord stays on your head at speed. Sunglasses with a floating strap survive the moment when someone in the seat behind you swings a bag. None of this is expensive and all of it is easier to pack than to source in Puntarenas at seven in the morning.

Timing matters as much as the products. Apply sunscreen at the hotel, before you dress, at least 20 minutes before sun exposure. Applying it on a moving boat with sandy hands, in wind, over skin that is already damp, produces the patchy coverage that shows up as a stripe across the top of the foot two days later. The Costa Rica Tourism Board's own travel guidance makes the same point about the Pacific coast generally, and the gulf is no gentler than the open coast in this respect.

Does reef-safe sunscreen actually matter around Isla Tortuga?

Yes, and for a specific reason: you snorkel directly over a shallow volcanic reef inside a protected reserve, in water where dozens of people are in at once. Mineral formulations based on non-nano zinc oxide or titanium dioxide are the practical choice. Apply them 20 minutes before you get in, so less washes straight off.

Two things are worth separating here, because marketing muddles them. The first is what the product contains. Reef-friendly generally means avoiding oxybenzone and octinoxate, the two ingredients most often flagged in coral studies, and choosing a mineral filter instead. The second is how you use it. Even a good mineral sunscreen sheds into the water if you apply it and jump straight in, so the 20-minute rule does as much work as the ingredient list.

The reef at Isla Tortuga is not a vast coral system. It is a shallow volcanic rock reef with coral patches, close enough to shore that you can swim to it, and busy enough with parrotfish, angelfish, sergeant majors, moray eels and the occasional eagle ray that operators build the snorkel session around it. Because the island sits inside the Islas Negritos Biological Reserve, the whole visitor model is built on keeping the site intact; the national protected-areas authority restricts development and landings for exactly that reason. Choosing a mineral sunscreen is a small, cheap way of not being part of the problem.

A practical note on packing it: mineral sunscreens are thicker and take longer to rub in, which is another argument for applying at the hotel rather than on a rocking deck. Bring a small tube for reapplication rather than the full bottle, and keep it in an outer pocket, not the dry bag, so you are not opening the dry bag with wet hands.

What about clothing as sun protection?

Fabric beats lotion on any surface you can cover. A long-sleeve swim top handles arms, shoulders and back for the whole day with no reapplication and no cost per use. A sarong over the legs during the post-lunch hours does the same job for the part of you that is lying flat in the sun and least likely to be checked. This is the reason the packing table above front-loads clothing rather than products.

What should you wear on the boat versus on the beach?

Wear swimwear under quick-dry shorts and a light shirt for the crossing, then strip to swimwear plus a rash guard on the island. There are no changing facilities on Isla Tortuga. Some Puntarenas departures give you showers and changing rooms back at the dock, which changes what you wear home.

The reason the boat outfit and the beach outfit are different is that the two environments punish different things. On the boat you want wind protection, sun cover and something that will not flap loose. On the beach you want the least fabric compatible with not burning, because everything is going to get wet and sandy anyway. Trying to solve both with one outfit produces the classic mistake: a cotton t-shirt that is soaked by ten and still soaked at four.

Quick-dry matters more than people expect on the return leg. The gulf crossing back to the mainland runs 45 to 90 minutes depending on your departure point, often into a headwind, often late in the day. Damp cotton at 25 knots of apparent wind is genuinely cold, and the people shivering under a towel on the return are almost always the ones who wore cotton out.

The Puntarenas speedboat departure from the Las Playitas private dock is the exception that changes the calculation, because it includes access to showers and changing facilities on return. If you are booked on that one, pack a full dry change of clothes and use them; you get to travel home clean rather than salted. On the Santa Teresa, Montezuma and Jaco routes there is generally no such stop, so the dry layer you pack is what you wear.

Do you really need a dry bag, and what needs protecting?

Yes, on a small boat. Spray comes over the bow on a normal gulf crossing whether or not it rains, and the deck bags of everyone around you are equally wet. A 5 to 10 litre roll-top handles the only four things that genuinely cannot get wet: phone, cash, documents and any medication.

Start with the honest inventory. Almost everything you bring is fine wet. Towels, swimwear, sunscreen, sandals, a hat, a water bottle: all of these shrug off salt water and dry in an hour on the sand. The dry bag exists for a very short list, and keeping that list short is what lets you carry a small bag instead of a large one.

• Phone. The single most common casualty. Salt water kills phones faster than fresh water, and the charging port is the usual entry point.
• Cash. Wet notes are still spendable but they are miserable to hand over, and the island vendors and restroom attendant deal in small notes.
• Passport or ID and hotel key card. Card keys demagnetise, and a soaked passport is a consular problem rather than an inconvenience.
• Medication and anything with a paper label. Includes seasickness tablets, which you want intact for the return leg.

A waterproof phone pouch on a lanyard is a different tool and solves a different problem. It lets you keep the phone with you on the beach and take photographs near the water. It is not a substitute for a dry bag during the crossing, because the pouches leak at the seal far more often than roll-tops do, especially once sand gets into the closure. If you carry a pouch, rinse the seal in fresh water before you trust it around salt.

One more thing about the crossing: hard cases and rigid coolers are awkward on small boats and crews will ask you to stow them. A soft roll-top squashes into a footwell. That is a real, practical difference on a boat where everybody is fitting their day into the same small amount of dry space.

What footwear survives a wet landing on sand?

Plan for a wet landing. Boats often ground on the sand rather than tying up at a pier, so you step off into ankle to shin-deep water. Bring sandals with a heel strap or water shoes you can walk in, and count on midday sand being too hot for bare feet.

The failure mode here is flip-flops. They come off in the surf, they float away, they slide on a wet fibreglass deck, and one of the more common minor injuries on beach boat trips is somebody going down on a wet step in flip-flops while holding a bag. A sandal with a heel strap costs nothing extra to pack and removes the whole category of problem.

Water shoes earn their place if you plan to swim from the rocky ends of the beach or walk out to the stone arch viewpoint. The centre of Playa Tortuga is soft powder sand with no hazards, but the edges have rock, shells and the occasional urchin in the shallows. Thin-soled reef shoes handle all of that and pack flat.

Once you are on the island, footwear becomes a heat problem rather than a grip problem. White sand at midday under equatorial sun reaches temperatures that make a 40-metre walk to the restroom genuinely unpleasant barefoot. Keep the sandals near your towel rather than back on the boat.

Should you bring your own mask when snorkel gear is provided?

Gear is included on every snorkel-focused tour to Isla Tortuga: mask, snorkel and fins, handed out on the boat. The provided kit is clean and functional. The one component worth bringing yourself is the mask, because fit is personal and a leaking mask ruins a 45-minute session that you cannot repeat.

Here is the honest split. Fins are bulky, they are sized generously, and the provided pairs are fine for a shallow reef swim where nobody is finning against current. Snorkels are commodity items. Masks are the exception, because a mask either seals against your face or it does not, and no amount of tightening fixes a shape mismatch. People with narrow faces, high cheekbones, deep-set eyes or facial hair are the ones who spend the session clearing water every ninety seconds.

If you own a mask you like, it packs into a shoe-sized space and it is the highest-return item on this entire list. If you do not own one, do not buy one for this trip on the assumption that the provided gear is poor. It is not. Just do the one thing that fixes most fit problems: before you get in the water, hold the mask to your face without the strap, breathe in gently through your nose, and see whether it holds on its own. If it does, it will seal. If it falls off, ask the crew for a different one while you are still on the boat rather than at the reef.

What about prescription lenses and contact lenses?

Contact lenses under a mask work as long as the mask seals; if it floods, you can lose a lens, so bring a spare pair rather than your only set. If you snorkel in prescription glasses at home, a prescription mask is a genuine upgrade for a reef this visible, but it is a personal purchase rather than something an operator will have on board.

How much cash should you carry, and in what notes?

Carry small notes, both colones and US dollars. The island has no cash machine and no card terminal. Budget for the restroom fee of around $1 per use, tips for the crew, and any of the extras that some tours charge for, such as WiFi access at around $5 or device charging at around $5.

This is the item most travellers get wrong, and it is the one that costs the least to get right. Costa Rica takes US dollars widely, but change is given in colones and nobody on a beach with no till wants to break a fifty. Small notes are the entire trick. Aim for a mix of one, five and ten dollar bills, or the equivalent in low-denomination colones, and keep them in the dry bag rather than a pocket.

The specific charges vary by operator, which is why the table below reads as a range rather than a fixed bill. The restroom fee of about a dollar per use appears on several tours, including the Puntarenas speedboat and the Santa Teresa departure. WiFi and device charging fees of about five dollars each are listed on the Santa Teresa tour. Beach chair rental is payable on the beach on some Puntarenas departures. Alcohol is excluded on every tour on this site and is sold separately.

One planning note that saves an awkward moment: the ground transport to the dock is not always included. The Jaco adventure tour lists the Jaco to Puntarenas transport as a separate charge of around $20. Read the inclusion list on the live listing before you leave the hotel, because that is a payment you make on the day.

What actually works for seasickness, and when do you take it?

Take any medication 30 to 60 minutes before boarding, not once the boat is moving. By the time symptoms start, oral tablets are working against a stomach that has already stopped cooperating. Sit low and central, keep your eyes on the horizon, and skip the heavy breakfast.

The Gulf of Nicoya is mostly sheltered water and the crossings are not rough by open-ocean standards, but they are long enough to matter. Ninety minutes from the Puntarenas side, ninety from Jaco and Herradura, 45 from Montezuma. In the dry season from December to April the gulf is at its calmest, which is one of several reasons that stretch is peak season. In the green season, and particularly in the afternoon when the sea breeze has built, the return leg can be lumpier than the outbound one.

The practical protocol, in the order it matters:

1. Timing beats product. Whatever you use, take it before you board. This is the single most common mistake.
2. Book the morning departure. Mornings are calmer on the gulf as a rule, before the daytime sea breeze builds. The first boats also reach the island before the crowd.
3. Position on the boat. Low and central, near the middle of the hull, where the vertical movement is smallest. The bow is the worst seat.
4. Horizon, not phone. Reading or looking at a screen on a moving boat is the fastest route to trouble.
5. Eat something light. An empty stomach is as bad as a full one; dry carbohydrate and a little water is the compromise.
6. Air, not cabin. Stay on the open deck if there is a choice. Diesel smell in an enclosed space accelerates everything.

If you are travelling with someone who reacts badly to boats, the departure point is a real lever. Montezuma and Santa Teresa give you a 45-minute crossing along a sheltered coastline instead of a 90-minute open-gulf run, and the Curu evening departure is only 15 minutes on the water. Costa Rica's meteorological service publishes marine and coastal forecasts through the Instituto Meteorologico Nacional if you want to look at conditions the night before.

How do you keep a phone or camera alive for a ten-hour day?

Start fully charged, carry the phone in a roll-top dry bag during crossings, and treat a waterproof pouch as a beach tool rather than a crossing tool. Do not count on charging on board. Some tours, including the Santa Teresa departure, charge around $5 for device charging, and there is no power on the island at all.

The battery arithmetic is straightforward. A full-day tour from Jaco runs about ten hours door to door, and the San Jose tour runs up to eighteen hours door to door including the road transfer each way. Add heat, add a screen at full brightness because you are in bright sun, add photographs and video, and a phone that starts at 60 percent will be dead somewhere around the lunch break. A small power bank in the dry bag solves this for a couple of dollars of weight.

Heat is the underrated risk. A black phone lying on white sand in direct equatorial sun will throttle and then shut down to protect itself, and it does that before the battery is empty. Keep the phone in the bag in the shade rather than face up on the towel, and it will still be working when the boat departs.

For salt water, the order of operations is: dry bag on the boat, pouch on the beach, rinse in fresh water at the end. If a phone does take a dunking, rinse it in fresh water rather than leaving the salt to dry inside the port. Salt crystallises and keeps corroding long after the device looks dry.

Cameras and action cameras

The reef at Isla Tortuga is shallow, bright and close to shore, which is close to ideal for an action camera. If you bring one, bring a floating handle or a wrist strap; the number of cameras that end up on the seabed at snorkel sites is not small. A DSLR is a different question. It is heavy, it hates salt spray, and there is nowhere secure to leave it while you swim. Most people are better served leaving the big camera behind, which brings us neatly to the next section.

What should you deliberately leave at the hotel?

Leave jewellery, valuables, your passport if a copy will do, big cameras, hard cases, a full-size cooler and anything you would be upset to lose in salt water. There is nowhere lockable on the island, the boat has limited dry storage, and everything you carry you carry all day.

Isla Tortuga is a low-risk environment. The only people there are other tour passengers and crews, there are no residents and no vendors working the beach in numbers, and petty theft is rare. That is not the argument for travelling light. The argument is loss and damage: rings come off in cold water when fingers shrink, sunglasses go over the side, and phones go in the sea. The island does not have a lost property office.

Does the packing list change by departure point?

The core list does not change, but four things do: how much road time you dress for, whether you get showers at the end, whether the day includes a land stop like the Tarcoles crocodile bridge, and whether you are on the water after dark on the Curu bioluminescence departure.

The San Jose full-day tour is the extreme case. It is listed at 18 hours door to door, with a pickup somewhere between 4am and 6am and roughly two hours of road each way. That is a genuinely long day, most of it not on the water, and it changes the packing question from beach kit to endurance kit: a layer for the air-conditioned coach, something to eat early on because breakfast is a roadside stop rather than an inclusion, and a phone charged for eighteen hours rather than eight.

The Jaco adventure tour adds the Tarcoles River bridge crocodile stop, which is a roadside stop on foot in full sun with no shade. Hat on before you get out of the van rather than after. The Puntarenas speedboat gives you showers and changing rooms back at the Las Playitas dock, which is the one departure where a full change of clothes genuinely pays. The Santa Teresa departure has the shortest crossing at 45 minutes and the longest list of small island charges, so it is the one where small notes matter most.

The Curu evening departure is a different day entirely. It starts with a wildlife walk in the refuge in the late afternoon, crosses to the island in 15 minutes for sunset, and finishes with a night swim in bioluminescent water. That means insect repellent for the forest walk, a dry towel for after dark when the air cools, and a torch is unnecessary because the crew carry light. Leave the camera; bioluminescence at the intensity you see with your own eyes does not photograph on a phone.

What does a fully packed bag look like on the morning of?

One small soft bag per person, sunscreen already applied, swimwear already on, and a dry bag inside holding phone, cash, keys and tablets. Everything else is a towel, a hat, sunglasses, a water bottle, sandals and a dry layer for the ride home. If it does not fit, you packed for a different trip.

Run this check the night before rather than at five in the morning. Lay out the dry-bag four first: phone, cash in small notes, hotel key or ID copy, seasickness tablets. Those go in the roll-top and the roll-top goes in the bag. Then add the wet-tolerant layer: towel, rash guard, sarong, sandals, water bottle, sunscreen for reapplication. Then the dry-clothes layer at the top, in a separate plastic bag so it stays dry even if the main bag does not.

Dress before you leave. Swimwear underneath, quick-dry shorts and shirt over the top, sunscreen applied 20 minutes earlier, hat and sunglasses in hand rather than buried. The pickup on most of these tours is early enough that fumbling with a bag in the dark at the meeting point is the last thing you want to be doing.

Then stop. The instinct to pack for every eventuality is exactly what produces the person carrying a heavy bag around a hot beach for five hours. Isla Tortuga is a small island where the boat feeds you, lends you snorkel gear, and takes you home again. The things that improve the day are a mask that fits, sun cover you do not have to reapply, sandals that stay on your feet, and a dollar for the restroom. Everything past that is weight.