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Episode 7: Puerto Vallarta & Los Arcos – Pacific Walls, Rays & Reef Life

Martin Gomez   Aug 05, 2026

TOP DIVE DESTINATIONS IN MEXICO

Episode 7: Puerto Vallarta & Los Arcos – Pacific Walls, Rays & Reef Life

 

 

Nestled along Mexico's stunning Pacific coastline, Puerto Vallarta offers an exciting blend of dramatic underwater landscapes, volcanic rock formations, thriving reefs, and abundant marine life.

Unlike the Caribbean's coral reefs or Baja's open-ocean encounters, Puerto Vallarta showcases the unique beauty of the Eastern Pacific, where underwater arches, pinnacles, caves, and rocky reefs create unforgettable diving experiences for divers of every certification level.

Just minutes from downtown lies one of Mexico's most iconic marine parks—Los Arcos National Marine Park—a destination famous for its spectacular underwater topography and incredible biodiversity.

Whether you're exploring volcanic walls, swimming with sea turtles, or watching giant Pacific manta rays glide through the blue during the right season, Puerto Vallarta offers an unforgettable Pacific adventure.

Why Dive Puerto Vallarta?

Puerto Vallarta is one of Mexico's most accessible Pacific dive destinations.

The warm waters of Banderas Bay, combined with nearby offshore islands and marine reserves, provide an incredible variety of dive sites suitable for beginners and experienced divers alike.

Divers can explore:

  • Volcanic walls

  • Underwater arches

  • Rocky reefs

  • Swim-throughs

  • Pinnacles

  • Caves

  • Artificial reefs

  • Seasonal pelagic encounters

Every dive reveals a different side of Mexico's Pacific coast.

Los Arcos National Marine Park

The crown jewel of Puerto Vallarta diving is Los Arcos Marine Park.

These dramatic granite islands rise above the surface while continuing below as towering underwater walls covered with marine life.

Divers enjoy:

  • Volcanic arches

  • Caverns

  • Swim-throughs

  • Colorful reef fish

  • Moray eels

  • Sea turtles

  • Excellent underwater photography

The unique geological formations make Los Arcos one of the most photographed dive sites in Mexico.

Marine Life Highlights

Puerto Vallarta's waters are home to an incredible variety of Pacific marine species.

Divers regularly encounter:

  • Green Sea Turtles

  • Olive Ridley Sea Turtles

  • Giant Pacific Manta Rays (seasonal)

  • Eagle Rays

  • Mobula Rays

  • California Sea Lions (seasonal excursions)

  • Octopus

  • Moray Eels

  • Seahorses

  • Nudibranchs

  • Pufferfish

  • Angelfish

  • Triggerfish

  • Snappers

  • Groupers

  • Schools of Jacks

  • Reef Fish

Seasonally, visitors may also encounter:

  • Humpback Whales (December–March, surface sightings)

  • Dolphins

  • Whale Sharks (occasional offshore encounters)

Must-Dive Sites

Los Arcos

Puerto Vallarta's signature dive site.

Known for:

  • Underwater arches

  • Swim-throughs

  • Rocky walls

  • Sea turtles

  • Reef fish

  • Spectacular photography

El Morro

An advanced offshore dive site featuring:

  • Pinnacles

  • Deep walls

  • Giant manta rays (seasonal)

  • Large schools of fish

  • Excellent visibility

Majahuitas Reef

Perfect for recreational divers.

Highlights include:

  • Calm conditions

  • Colorful reefs

  • Moray eels

  • Reef fish

  • Macro photography

Las Marietas Islands

A UNESCO Biosphere Reserve located at the entrance of Banderas Bay.

Famous for:

  • Healthy reefs

  • Sea turtles

  • Eagle rays

  • Dolphins

  • Crystal-clear water

Diving Conditions

Puerto Vallarta offers year-round diving.

Typical conditions include:

  • Water Temperature: 72°F–86°F (22°C–30°C)

  • Visibility: 30–80 feet (10–25 meters)

  • Dive Style: Boat Diving

  • Current: Mild to Moderate

  • Depth: Suitable for Open Water through Advanced Divers

Best Time to Visit

November – May

The best overall diving conditions.

Highlights include:

  • Cooler, clearer water

  • Humpback whale season

  • Excellent visibility

  • Comfortable temperatures

June – October

  • Warm water

  • Giant manta rays (seasonal)

  • Healthy reef life

  • Fewer visitors

Every season offers unique underwater experiences.

Recommended Certification

Open Water Diver

Ideal for:

  • Los Arcos

  • Majahuitas Reef

  • Reef diving

  • Boat diving

Advanced Open Water Diver

Recommended for:

  • El Morro

  • Deeper walls

  • Offshore pinnacles

  • Stronger currents

Specialties that enhance your experience include:

  • Peak Performance Buoyancy

  • Nitrox Diver

  • Deep Diver

  • Boat Diver

  • Underwater Photography

Underwater Photography

Puerto Vallarta is an excellent destination for both wide-angle and macro photography.

Wide-Angle Subjects

  • Volcanic arches

  • Sea turtles

  • Giant manta rays

  • Underwater walls

  • Schools of fish

Macro Subjects

  • Nudibranchs

  • Seahorses

  • Cleaner shrimp

  • Blennies

  • Octopus

The dramatic volcanic scenery creates stunning underwater compositions.

Beyond the Diving

Puerto Vallarta offers much more than world-class diving.

Visitors can enjoy:

  • The famous Malecón

  • Beautiful beaches

  • Whale watching

  • Sunset cruises

  • Sport fishing

  • Jungle excursions

  • Authentic Mexican cuisine

  • Hidden Beach tours (Marietas Islands)

  • Art galleries

  • Local markets

It is one of Mexico's most complete vacation destinations.

Travel Tips from Illinois

  • Fly from Chicago (ORD) directly or with one connection to Puerto Vallarta International Airport (PVR).

  • Most dive boats depart from Marina Vallarta or nearby marinas.

  • Plan a 5–7 day trip to combine diving and sightseeing.

  • Bring reef-safe sunscreen.

  • A 3 mm wetsuit is suitable for most of the year.

  • Reserve whale-watching tours during the winter season.

Did You Know?

Los Arcos National Marine Park is one of Mexico's oldest protected marine areas and serves as an important refuge for marine life, seabirds, and coral communities in Banderas Bay.

The nearby Marietas Islands are also recognized as a UNESCO Biosphere Reserve, helping preserve one of the Eastern Pacific's most diverse coastal ecosystems.

Loves Park Scuba Recommendation

Puerto Vallarta is the perfect destination for divers looking to experience Mexico's Pacific coast without traveling far offshore.

With dramatic volcanic formations, colorful reefs, sea turtles, seasonal manta rays, and world-class marine parks, it offers something for every diver—from beginners to experienced underwater explorers.

Whether you're exploring the arches of Los Arcos, photographing nudibranchs on a rocky reef, or watching humpback whales breach during your surface interval, Puerto Vallarta combines adventure, relaxation, and incredible marine life into one unforgettable dive vacation.

Discover the wild beauty of Mexico's Pacific coast…

Where volcanic landscapes meet vibrant underwater life.

Coming Next...

Episode 8: Xcalak & Banco Chinchorro – Mexico's Hidden Caribbean Frontier

Explore the largest coral atoll in the Western Hemisphere, untouched Caribbean reefs, historic shipwrecks, reef sharks, sea turtles, crocodiles, and one of Mexico's best-kept diving secrets.

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