Dolphins show up early here. This half-day to late-morning start pairs Marietas Islands with Los Arcos de Mismaloya, giving you chances for dolphins, turtles, manta rays, and whales while a crew handles the heavy lifting.

I love the patient, hands-on instruction that helps you feel calm in the water, and I love that the tour takes care of the gear setup so you are not wasting time wrestling tanks and straps.

One consideration: visibility at Los Arcos can be hit-or-miss, so your best underwater moments may depend on conditions that day.

Key things I’d plan around

• Two different sites, two different vibes: Marietas is the wildlife-and-hidden-beach option, while Los Arcos offers both practice depths and deeper walls.
• Smaller group size: Up to 14 people, which usually means less waiting and more attention from the crew.
• Instruction focused on confidence: If you are nervous or getting back into the rhythm, the team’s pacing is a big part of the appeal.
• Snorkel gear is part of Marietas: Even if you are not scuba certified for that specific stop, you still get time on the surface.
• Optional hidden beach with a deposit refund: If weather or availability blocks it, they will refund your deposit.
• Expect cool water sometimes: Past guests noted chilly conditions, and extra warmth gear may be offered.

Puerto Vallarta to Marietas and Los Arcos: the basic plan

This is a classic two-site Puerto Vallarta underwater itinerary with a boat departure around 9:00 am from Marina Vallarta. You are looking at roughly 4 to 6 hours total, depending on how the day runs and how long you spend underwater and on the surface.

The day is structured so you get value from both stops. Marietas is where the big scenic draw lives, especially with the optional hidden beach activity. Los Arcos de Mismaloya is more about underwater variety and reliable training-style depths, from gentler water for practice to much deeper drops for advanced teams.

If you like the idea of starting early, getting out to sea before crowds build, and then having a clear plan for gear, instruction, and time in the water, this style of tour fits well.

Price and what makes it feel like value

The price is $125.00 per person, and that is the base for a full boat day with multiple site stops, lunch, and equipment. For many people, the real question is not the headline price, it is what gets wrapped into it versus what you pay later.

Here is what is included:

• life vest and use of scuba equipment (plus any standard gear you are assigned)
• boat ride
• box lunch and bottled water
• federal and conservation fees (CONANP federal fee and a conservancy donation fee to Bahia Unida)
• national park permits

Not included costs to keep on your radar:

• a Beginner Scuba Diving Class for $25.00 per person
• Government Fees of $6.00 per person

So, for a first-time or “I need a refresher” situation, you might end up paying a bit more once you add the beginner class and the extra government fees. Still, the base price includes a lot that many other tours charge separately, especially the park permits and conservation fees.

Two practical notes from how the tour operates:

• The group is small (maximum 14), so the per-person attention often feels higher than big-boat style trips.
• You should plan to manage paperwork and any extra fees quickly during check-in, because you start at 9:00 am and the schedule is tight once you leave the marina.

Starting at 9:00 am: Marina Vallarta, gear, and getting comfortable

Your meeting point is Marina del Rey Condominium, Proa 22, Marina Vallarta, 48335 Puerto Vallarta, Jal., Mexico, and you start at 9:00 am. The tour ends back at the same meeting point.

A couple of details matter here:

• This is near public transportation, which makes it easier to arrive without a private car.
• You need moderate physical fitness. That usually means you can handle boat movement and getting in and out of the water with help.
• Alcohol or drugs are not allowed, and there are health exclusions like heart disease, and back, spine, or knee problems.

What I like about this setup is that the tour is designed to reduce friction. You get help with equipment and you do not have to figure out your setup on your own. That matters a lot on a first time trip, because the mental load is often the hardest part.

Also, many first-timers carry one secret worry: how they will react once they are under. Past guests highlighted how patient the instructors are, especially when someone is still working out breathing rhythm and staying relaxed. The pre-session talks are built to keep you calm, not to overwhelm you.

Marietas Islands: snorkeling time, optional hidden beach, and winter wildlife

Marietas Islands is the first stop and the one with the most “wow” potential. You depart around 9:00 am, and you get good views early from the river area near the marina before you even reach open water.

From there, the itinerary focuses on two things:

1. Wildlife as you head out
2. Water time around the islands

During winter, the ocean can bring standout sightings on the way out, including dolphins, turtles, manta rays, and whales. That is the sort of mix that makes you feel like you are getting more than a checklist underwater.

Snorkel gear and skills

At Marietas, you receive snorkel gear and life jackets and you get a quick teaching moment to help you use the equipment and improve in-water comfort. The goal is fun and safety, not complicated techniques.

Important clarity: Marietas has a certification requirement for scuba at that stop. If you are not certified for the underwater portion there, you can still enjoy the snorkeling side of the experience.

The hidden beach option

The hidden beach activity at Marietas is optional and has an extra cost of $25.00. They take the deposit cash by morning during check-in. If you cannot access the hidden beach because of availability or weather conditions, your deposit is refunded.

A smart strategy here is to treat this like a “maybe, but worth trying” add-on. If it does work, you get access to one of the top ten beaches in the world, as described by the operator. If it does not, you are not stuck eating the cost due to the refund promise.

What to watch out for

Marietas is a natural area, so conditions can change. Visibility and currents vary by day. If you are sensitive to choppy water, arrive early, hydrate well, and let the crew know if you need extra help.

Los Arcos de Mismaloya: where practice depths meet bigger walls

After Marietas, you shift to Los Arcos de Mismaloya, a national park stop built for underwater variety. You spend about 1 hour 30 minutes at this site.

This is also the stop that helps the whole day make sense for mixed experience levels. The site is described as perfect for beginner dives and also for experienced scuba, with depths from 20 ft for practice and certifications. For advanced teams, there is also a wall going down to about 1,600 ft.

You should not take that wall number as a promise you will do something extreme. Instead, think of it as proof the park offers multiple depth zones. That flexibility is what helps beginners feel supported and helps more experienced guests still find interesting terrain.

Reality check on visibility

One downside to know: water clarity at Los Arcos can vary. In some conditions, you may not see as much as you hoped. If you go in expecting consistent crystal-clear water no matter what, you might feel disappointed.

Still, the positives are strong if you adjust your expectations. Even when visibility is not at its best, Los Arcos can deliver lots of fish life, plus the pleasure of a structured, guided underwater session in a national park setting.

Wildlife on the itinerary: what you can realistically hope for

This trip is built around sea life. That means your “win” is not only the underwater experience, it is what you see from the boat.

Here is what the plan explicitly points toward:

• dolphins, including sightings early near the marina river area
• turtles
• manta rays
• whales in winter conditions

And then there is the common pattern: the wildlife action often happens during the boat segments. That means you should be ready to look up as well as down. Bring a phone you can secure and keep within reach for quick photos when the captain pauses or when sightings appear right alongside the boat.

You will also see plenty of sea life in-water. Past guests described encounters like octopus, lobsters, reef sharks, and tons of fish, which aligns well with a protected national park ecosystem.

Staff, coaching, and why guides matter more than you think

This is one of those tours where the crew makes the difference between a stressful day and a satisfying one.

A recurring theme in the experience is patient, friendly support. Multiple named instructors and guides come up, including Carlos, Eric, Nahum, Martin (captain), Rodrigo, and Javi. The most consistent praise is how the team keeps things organized and makes first-timers feel safe.

Practically, that looks like:

• help with equipment so you do not wrestle gear alone
• clear pre-session instructions so you know what to expect
• steady coaching during the water time, especially for nervous beginners working through breathing rhythm and buoyancy

If you have any anxiety about getting underwater, you will likely appreciate this approach. It is not just about safety compliance, it is about reducing mental friction so you can actually enjoy the experience.

Time in the water: how the day usually feels

The overall schedule is built for a relaxed pace, not a race. At Marietas, you get snorkel gear and training plus time on the surface, and there may be a scuba option for certified guests at that stop.

At Los Arcos, you spend enough time for meaningful underwater exploration, and past guests described doing multiple underwater sessions in a typical format, often with around 45 minutes per session and descents roughly in the 40 to 50 ft range. That fits well with the idea of practice-friendly depths at 20 ft plus access to deeper areas depending on what you and the instructors decide is appropriate.

Boat time matters too. This itinerary uses the ride out and ride back as part of the experience, not downtime. That is when you can get dolphin sightings, and you may even see large pods of dolphins during the return ride in some conditions.

What you eat and how to stay comfortable

You get a box lunch and bottled water, which is a genuine convenience when you are out at sea for most of the day. Past guests mentioned a sandwich option like ham and cheese, plus fruit.

That said, food can be simple on boat tours. If you have dietary preferences or you know you snack often, bring a small extra snack you like. You will feel better if you are not relying on the included lunch to be exactly what your stomach wants.

For warmth, the sea can feel cool even in decent weather. One review mentioned being offered a spring suit or shorty, and another highlighted that the crew may provide extra wetsuit help. The safe move is to bring your own swimwear and consider packing a light layer for the boat ride, especially if you run cold easily.

Who should book this trip, and who should skip it

This experience fits best if you want:

• a small group trip (maximum 14)
• a mix of surface snorkeling and guided underwater time
• a day focused on marine life, especially dolphins and the winter whale season
• professional instruction that helps nervous first-timers

It is not for you if you have specific medical concerns listed by the tour, like heart disease, or back, spine, or knee problems. Also skip it if you have been drinking or using drugs, since the tour does not permit it.

Age-wise, the minimum recommended age is 10 years. If you are traveling with teens, they may find the mix of snorkeling and underwater options engaging.

Quick booking advice: what to plan for before you arrive

If you want the day to feel smooth, do these things:

• arrive with time to find the meeting point and check in before the 9:00 am departure
• wear something you can get wet, and bring a towel and dry clothes for the return
• bring your own mask if you already have one, but the tour can provide what you need if necessary
• if you want the hidden beach option, plan to bring $25 cash for the deposit during check-in

Also, keep in mind that an optional beginner scuba class costs $25 per person, and the government fees are $6 per person. If you are not sure what you need, ask during booking so you are not making decisions last minute once you are already on the clock.

Should you book Marietas and Los Arcos with Eco Explorer Vallarta?

Book it if you want a well-run small-group marine day that mixes snorkeling, wildlife watching, and guided underwater time at two very different sites. The value is strongest when you care about being supported in the water, not when you think you can figure everything out on your own.

I would especially book if:

• you are a newer scuba participant and want patient coaching
• you want a chance at dolphins, plus winter whale season possibilities
• you like the idea of pairing Marietas and Los Arcos in one half-day format

I might think twice if:

• you are extremely sensitive to variable visibility, because Los Arcos conditions can change
• you are dealing with health limitations listed by the tour, since participation is not recommended

If you match the fitness and medical guidelines and you go in with flexible expectations about visibility, this is the kind of Puerto Vallarta trip that can turn into one of your clearer memories from Mexico’s Pacific coast.

FAQ

What is the duration of the Puerto Vallarta Marietas and Los Arcos experience?

The tour runs about 4 to 6 hours, depending on conditions and how the day flows.

What time does the tour start?

It starts at 9:00 am.

Where is the meeting point?

The meeting point is Marina del Rey Condominium, Proa 22, Marina Vallarta, 48335 Puerto Vallarta, Jal., Mexico.

Is the tour in English, and do I get a mobile ticket?

Yes. The tour is offered in English, and you receive a mobile ticket.

Do I need to be scuba certified for Marietas Islands?

Yes. You must be certified to go underwater at Marietas Islands. The itinerary also includes snorkeling gear and instruction at Marietas.

Is there a beginner scuba class available?

Yes. A Beginner Scuba Diving Class is available for an extra $25.00 per person.

What is included in the price?

Included are a boat ride, life vest, box lunch, bottled water, CONANP federal fee, conservancy donation fee to Bahia Unida, national park permits, and use of scuba equipment.

What is not included?

Not included are the Beginner Scuba Diving Class ($25.00 per person) and Government Fees ($6.00 per person).

Is the hidden beach at Marietas included?

No, it is optional. It costs $25.00 extra, and you pay a deposit cash during check-in.

What happens if weather is bad?

This experience requires good weather. If it is canceled due to poor weather, you are offered a different date or a full refund.