Reviewed · PUERTO VALLARTA TOURS
Scuba Diving Puerto Vallarta Undersea Arcos or Marietas
The best part of this Puerto Vallarta outing is the chance to trade the resort pool for the underwater world of Los Arcos or the Marietas Islands. The boat ride can add dolphins, turtles, manta rays, and winter humpback whales before you even reach the sites.
I like the patient instruction for first-time and rusty divers, and I like the small maximum of 14 people. Guides such as Eric, Carlos, and Nahum have earned praise for calm safety talks and close help in the water. The main drawback is that visibility and sea life can change sharply with weather and location, and the Marietas route requires certification.
Key points
- Los Arcos suits beginners and certified divers: Shallow areas begin around 20 feet, while advanced sites reach far greater depths.
- Marietas requires certification: The boat ride can bring dolphins, whales, turtles, and manta rays, with snorkeling support for non-divers.
- Patient guides make a difference: Eric, Carlos, Nahum, and other staff help with gear, breathing, comfort, and safety.
- Wildlife is possible, not promised: You might see reef sharks, octopuses, lobsters, puffers, dolphins, or whales.
- The $125 price covers a lot: Boat transport, scuba equipment, bottled water, box lunch, park permits, and conservation fees are included.
- Plan for extra charges: Beginners pay $25 for the introductory class, and a $6 government fee is not included.
Choosing between Los Arcos and the Marietas Islands

This is best understood as a Puerto Vallarta underwater outing with two main settings. Los Arcos de Mismaloya lies south of town and is often the better match for a first scuba lesson, a refresher, or a short outing. The Marietas Islands sit farther out in Banderas Bay and add a longer boat ride, island scenery, snorkeling, and the possibility of larger wildlife.
The exact plan matters. The published route describes a morning departure to Marietas, then a southbound visit to Los Arcos, but the title presents the outing as Los Arcos or Marietas. Ask at booking which site is scheduled for your date and level. The trip may be arranged around sea conditions, certification, and the type of activity you have chosen.
I like this flexibility because you are not locked into one kind of day. Los Arcos gives you practical underwater time close to Puerto Vallarta, while Marietas makes the boat ride part of the attraction. The tradeoff is that the two locations are not interchangeable. Certified divers seeking a longer offshore trip may prefer Marietas, while first-time participants should expect Los Arcos or a beginner program.
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Leaving Marina Vallarta at 9 a.m.
You meet at Marina del Rey Condominium on Proa 22 in Marina Vallarta. The trip begins at 9 a.m. and returns to the same meeting point, usually after four to six hours. It is near public transportation, but you should still allow time to find the correct marina entrance and meeting spot.
The boat ride starts with views around the Ameca River. The first stretch takes about 10 minutes, and the river mouth can be a good place to spot dolphins feeding. That small detail gives the morning a pleasant start: you are watching the water before the main activity begins.
The ride to Marietas takes roughly an hour after leaving the river area. In winter, keep your eyes open for humpback whales, turtles, manta rays, and dolphins. These sightings are seasonal and never guaranteed, but they can make the trip feel like more than simple transport between two points.
The boat has room for up to 14 people. That limit matters when you are handling masks, buoyancy equipment, tanks, and wetsuits. It also gives the guide a better chance to keep track of individual comfort levels than a large party boat would.
Getting ready with Eric, Carlos, or Nahum

The crew supplies the scuba equipment, life vest, bottled water, and a short box lunch. You can use the provided mask and other gear, though one recent participant brought a personal mask. Equipment was described as being in good condition, and staff handle much of the setup instead of leaving you to manage heavy gear alone.
For a beginner, the briefing is the heart of the outing. You receive help with the equipment, breathing, life jackets, and basic in-water skills. Eric has been singled out for clear pre-water explanations and patient help with nervous first-time participants. Carlos has also been praised for staying close to less experienced participants, while Nahum has guided small groups at Marietas.
That human help is important. New divers often struggle less with the technical gear than with breathing rhythm and the feeling of being underwater. The crew gives you time to settle down rather than treating nerves as a nuisance. If you have not been underwater for a year or more, tell the guide before leaving the dock.
The rules are firm for good reason. You need a moderate level of physical fitness, and the activity is not suitable for people with heart disease or back, spine, or knee problems. Anyone under the influence of alcohol or drugs cannot participate. The recommended minimum age is 10.
If you are a beginner, the introductory scuba class costs an extra $25 per person. The activity welcomes all levels at Los Arcos, but Marietas requires a current scuba certification. Do not book the offshore island route expecting an on-site substitute for certification.
Los Arcos: a practical first underwater outing

Los Arcos National Park is the more approachable setting in this program. The site offers areas around 20 feet deep for practice and certification work, along with much deeper walls for advanced and technical divers. That range lets a guide match the location to your skills instead of sending every participant into the same water.
For a new diver, shallow water has real value. You can focus on breathing, buoyancy, hand signals, and staying calm without adding great depth to the lesson. The site can also work well as a refresher for someone who has not used scuba gear in many years.
Certified divers may find more challenge around the walls and deeper sections. The stated maximum of 1,600 feet refers to the wall drop, not a recreational descent. Your guide determines the safe route, and the outing is not a free-for-all for experienced participants.
Conditions can be uneven. One visit may offer about 30 feet of visibility and a busy underwater scene, while another may be murky with less to see. You might encounter puffers, lobsters, octopuses, reef sharks, turtles, and large schools of fish, but the sea decides what appears on the day.
I would choose Los Arcos if your priority is a shorter ride, a first lesson, or a controlled refresher. I would not choose it solely on the promise of crystal-clear water. This is the Pacific coast, and visibility can shift with season, swell, and local conditions.
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Marietas Islands: longer ride, bigger wildlife hopes

Marietas adds a stronger sense of open-sea adventure. The islands are known for rocky formations, bird life, snorkeling water, and the possibility of a hidden beach visit. You receive snorkeling equipment and instruction in how to use the gear and life jackets, so the day can work for a mixed group of scuba participants and snorkelers.
The hidden beach visit is optional and costs an additional $25. You pay the deposit in cash at morning check-in. If availability or weather prevents the visit, the deposit is refunded under the operator’s stated guarantee. That arrangement reduces the risk of paying for an add-on that cannot happen, though you should still carry the required cash.
The hidden beach is not the main scuba activity. Treat it as a separate extra, not as a guaranteed part of the standard $125 outing. Access depends on conditions and availability, and the operator reports that most participants are able to enter.
The offshore ride is one of Marietas’ strongest points. Dolphins may swim near the boat, and winter can bring whales, turtles, and manta rays. One particularly memorable wildlife possibility is hearing humpback whale sounds underwater, though that sort of encounter is luck rather than part of the scheduled service.
Certified divers can expect the staff to help with equipment and route planning. Non-certified participants may be able to snorkel, but they cannot take part in the Marietas scuba portion without certification. If your group includes both divers and snorkelers, confirm how the time will be divided before you pay.
What the $125 price really covers

At $125 per person, this is a fair package if you will use the scuba equipment and boat service. The fee includes the boat ride, scuba gear, life vest, bottled water, box lunch, national park permits, the CONANP federal fee, and a conservation donation to Bahia Unida.
That bundle saves you from adding separate equipment-rental and park charges after booking. The trip also includes the guide support that matters most for beginners and returning divers. A small party can make the cost feel worthwhile because the staff can give more personal attention.
The price is not all-inclusive. Budget another $25 if you need the beginner scuba class, plus a $6 government fee per person. The optional hidden beach visit adds $25, and gratuities are not listed as included. Cash is useful for the morning charges, though one participant noted that card payment was possible with a 5 percent fee.
Lunch is basic: fruit and a ham and cheese sandwich. I would bring extra food if you tend to get hungry after time on the water. Keep expectations sensible here. This is fuel for a half-day boat trip, not a catered meal.
Wildlife, visibility, and the luck factor

The wildlife list is appealing, but it needs a practical reading. Dolphins may appear near the Ameca River or alongside the boat. Winter brings the best chance of seeing humpback whales, while turtles, manta rays, and other animals may show up during the ride or underwater.
At Los Arcos, underwater sightings have included octopuses, puffers, lobsters, reef sharks, turtles, and many fish. One outing produced roughly a dozen octopuses and reef sharks, while another had very little to see because the water was cloudy. Both outcomes are possible in coastal Mexico.
That variability is not a flaw unique to this operator. It is part of choosing a sea-based activity. I would book this for the chance to see marine life, not for a guaranteed animal checklist. If wildlife is your main goal, Marietas and a winter departure may give you more possibilities, but no guide can control the ocean.
Visibility also affects the feel of the activity. Around 30 feet of visibility can make Los Arcos exciting and easy to read. Murky water can limit the view even when the guide is doing everything right. Ask about recent conditions if you have a flexible schedule.
Why the crew earns strong marks

The most consistent strength here is the staff. Eric is especially useful for nervous beginners and returning participants, with patient explanations before entering the water and close attention during the session. Carlos has been praised for calm assistance, and Nahum has guided both the water work and boat routine.
The crew also handles practical chores. You may not need to assemble your own equipment or lift it out of the water. That is a real benefit when you are tired, new to scuba, or managing a camera and personal items.
The captain matters too. Martin has been named as a careful part of the Marietas team, and captains have stopped when dolphins appeared close to the boat. Those pauses are not guaranteed, but they show how the ride can adapt when conditions offer something special.
The group may include snorkelers as well as scuba participants. A recent Marietas trip had four divers and eight snorkelers. That mix can be pleasant for couples or families with different interests, but it may mean the boat schedule is shared between two activities.
Timing, comfort, and what to bring

Plan on four to six hours from departure to return. A Marietas route can keep you on the water until around 2 p.m., while a Los Arcos trip may feel shorter. Wear a swimsuit and expect to use a spring suit or shorty wetsuit, especially in winter or if you get cold easily.
Bring sunscreen, a towel, cash for the $6 fee and any optional charges, and extra snacks. A waterproof phone pouch can help if you want photos from the boat, since photo and video service is not included. One participant specifically wished for pictures of the underwater outing, so do not assume the crew will provide a media package.
The activity is offered in English, and you receive a mobile ticket. Booking confirmation normally arrives right away, except when you book within one day of departure, when confirmation depends on availability.
Cancellation is free until 24 hours before the start time. Inside that window, you do not receive a refund and changes are not accepted. The trip also needs good weather and a minimum number of participants. If the operator cancels for either reason, you are offered another date or a full refund.
Who should book this Puerto Vallarta scuba outing?
I would recommend it to a certified diver who wants a guided half-day in Banderas Bay, especially if you value help with gear and a small group. It also suits a first-time participant who is comfortable paying the extra $25 class fee and meeting the physical requirements.
Los Arcos is the safer choice for beginners and rusty divers. Marietas is the better fit for certified divers who want a longer boat ride, island scenery, snorkeling options, and a chance at bigger wildlife. Families or couples with mixed interests may like the shared scuba and snorkeling format.
I would hesitate if you need guaranteed clear water, guaranteed whales, or a full meal. I would also avoid booking Marietas without confirming your certification status and the exact route. Sea conditions can change the quality of the underwater view, so keep your schedule flexible if possible.
With a 4.8 rating from 77 ratings and 95 percent of customers recommending it, the strongest case is not a promise of perfect visibility. It is the combination of capable guides, personal help, included equipment, and a reasonable group size.
Should you book it?
Book this Puerto Vallarta scuba trip if you want careful instruction, a manageable group, and a chance to see Los Arcos or Marietas without arranging gear and permits yourself. I especially like it for beginners at Los Arcos and certified divers who want Marietas with an experienced guide.
Before paying, confirm the destination, certification requirement, extra fees, and hidden beach availability. Bring snacks and cash, accept that wildlife and visibility are unpredictable, and you will be set up for a rewarding half-day on and under the water.
FAQ
How long does the Puerto Vallarta scuba tour last?
The activity lasts approximately four to six hours. It begins at 9 a.m. and returns to the Marina del Rey Condominium meeting point.
Where does the tour meet?
You meet at Marina del Rey Condominium, Proa 22, Marina Vallarta, Puerto Vallarta, Jalisco, Mexico.
Do I need scuba certification?
You must be a certified diver to scuba at the Marietas Islands. Los Arcos welcomes all experience levels, including beginners who pay an additional $25 for the beginner scuba class.
What is included in the $125 price?
The price includes the boat ride, scuba equipment, life vest, bottled water, box lunch, CONANP federal fees, a conservation donation to Bahia Unida, and national park permits.
What extra costs should I expect?
The beginner scuba class costs $25 per person. A $6 government fee is also excluded. The optional hidden beach visit costs $25, paid as a cash deposit at morning check-in.
What wildlife might I see?
You might see dolphins, whales, turtles, manta rays, reef sharks, octopuses, puffers, lobsters, and other fish. Wildlife sightings depend on the season and sea conditions.
Can I cancel for a full refund?
You can cancel at least 24 hours before the local start time for a full refund. Cancellations or changes made within 24 hours are not refunded or accepted. Poor weather or an insufficient number of participants may lead to a rescheduled trip or full refund.
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