Under the Arches: A Day with Los Arcos’ Sea, Sun, and Secret Beaches
Paddle, Snorkel, and Watch the Bay Come Alive — A practical, high-reward guide to Puerto Vallarta’s iconic marine sanctuary.
The first light crests over the Sierra Madre and the bay answers in glass. From the bow of a skiff you can see why people keep coming back to Los Arcos: a cluster of granite islets rising like an ancient citadel from Bahía de Banderas, their arches cut by wind and salt into frames for the Pacific. A pelican hovers, fisherman cast, and the water beneath the boat is a patchwork of blues—shallows that show coral gardens, channels that run suddenly deep. You feel small in a way that’s oddly generous; the mechanics of tide and stone have been at work here for millennia, and for a few hours you get to be part of it.
Trail Wisdom
Go early for calm seas
Morning departures usually offer the clearest water and gentlest conditions for snorkeling and SUP activities.
Use reef‑safe sunscreen
Apply a mineral-based, reef-safe sunscreen before you board to protect coral and comply with sanctuary guidelines.
Bring a dry bag and spare shoes
A small dry bag keeps electronics safe; water shoes help on rocky beaches and short jungle hikes.
Respect marine life
Don’t touch or chase turtles, fish, or coral; maintain distance and follow guide instructions for wildlife encounters.
Local Knowledge
Hidden Gems
- •Colomitos Beach — a tiny, sheltered cove with luminous water and fewer crowds
- •Majahuitas or hidden beach stops — small coves accessible only by boat for lazy swims and quiet snorkeling
Wildlife
Green sea turtles, Bottlenose dolphins
Conservation Note
Los Arcos is a designated marine geological sanctuary; local operators emphasize reef‑safe practices, small-group limits, and no‑touch rules to minimize visitor impact.
The bay and nearby Mismaloya were a backdrop for the 1964 film The Night of the Iguana; the islets themselves are protected as a marine geological sanctuary important to local fisheries and tourism.
Seasonal Guide
spring
Best for: Warmer water, Fewer crowds than winter, Good snorkeling visibility
Challenges: Occasional spring swells, Variable visibility early season
Late spring is a sweet spot—water is warming, visibility improves, and crowds are moderate.
summer
Best for: Warmest water temperatures, Longer daylight for multi-stop trips, Excellent for snorkeling
Challenges: Afternoon thunderstorms, Coastal runoff after heavy rain
Summer offers warm, inviting water for long swims, but watch the forecast for afternoon storms.
fall
Best for: Quieter tours, Stable weather windows, Good boat charter rates
Challenges: Hurricane season overlap (rare), Possibility of murky runoff
Autumn is quieter and often affordable, though storms can affect visibility and scheduling.
winter
Best for: Whale sightings offshore, Clear, cool mornings, Sunrise and sunset cruises
Challenges: Cooler mornings, More tourists December–March
Winter brings whales and crisp mornings—book early for peak-season availability.
Photographer's Notes
What to Bring
Mask and snorkel (or prescription mask)Essential
A well-fitting mask vastly improves underwater visibility and comfort during long swims.
Reef‑safe sunscreenEssential
Protects your skin and the coral—required by many operators in the sanctuary.
Water shoes
Protects feet on rocky shorelines and during short jungle hikes to waterfalls.
Waterproof camera or phone dry bagEssential
Preserve photos and electronics from spray, splashes, and sandy pockets on beaches.
Common Questions
How far is Los Arcos from Puerto Vallarta?
Los Arcos lies about six miles (roughly 10 kilometers) south of Puerto Vallarta; most boats leave from Mismaloya or Marina Vallarta with rides typically 20–40 minutes depending on the vessel.
Do I need to be an experienced swimmer to go snorkeling?
No—guides provide flotation devices and life jackets; however you should be comfortable in open water and able to follow safety briefings.
Can I visit Los Arcos on my own?
Private boats are available, but there’s no public dock on the islets. Licensed tours and charters provide access, safety equipment, and local knowledge required to navigate the protected area.
What wildlife might I see?
Expect colorful reef fish, sea turtles, rays, seabirds, and seasonally (Dec–Mar) humpback whales farther offshore; dolphin encounters are common on small-group tours.
Is it pet‑friendly or accessible for people with limited mobility?
Accessibility varies by operator; larger yachts can be easier to board for people with limited mobility, but most pangas require steps or ladders. Pets are typically not allowed on public tours.
Are there restrictions because it’s a marine protected area?
Yes—touching coral, collecting shells, and feeding wildlife are prohibited. Operators follow sanctuary rules and ask visitors to use reef-safe products and avoid anchoring on reefs.
What to Pack
Mask & snorkel for clearer views; reef‑safe sunscreen to protect coral; water shoes for rocky shores; dry bag for phone/camera safety.
Did You Know
Los Arcos de Mismaloya were the backdrop for scenes in the 1964 film The Night of the Iguana, which helped introduce Puerto Vallarta to international audiences.
Quick Travel Tips
Book morning departures for calm seas; choose small-group tours for better wildlife viewing; bring cash for beach restaurants in Yelapa; pack a light long-sleeve for sun protection on the boat.
Local Flavor
Coastal villages like Yelapa and Quimixto serve fresh seafood and palapa restaurants where ceviche, grilled fish, and handmade tortillas pair perfectly with a cold cerveza—supporting these communities keeps tourism local.
Logistics Snapshot
Where to start: Mismaloya Beach; Duration: half- to full-day; Cost range: shared tour to private charter; Bring: reef‑safe sunscreen, water shoes, ID; Best for: snorkeling, SUP, secluded beaches.
Sustainability Note
Choose operators that limit group size, follow ‘no-touch’ reef rules, use reef-safe products, and contribute to local conservation fees when available.