#1 sunset & BIOLUMINESCENCE TOUR IN PUERTO VALLARTA

What You Need to Know About the Bioluminescence in Puerto Vallarta

Sunset & Bioluminescence Boat Tour at Los Arcos

Experience the breathtaking sunset from Los Arcos islands, then slip into the dark caves to swim among glowing bioluminescent plankton that sparkle like stars in the ocean ✨.

If you’ve heard about the glowing waters and wondered what makes them shine, you’re not alone. Guests often ask us the same questions before joining our Sunset & Bioluminescence Adventure. Here’s everything you need to know, from the science behind the glow to how you can experience it with Mismaloya Xtreme. This rare experience is best observed at Los Arcos de Mismaloya, where conditions are perfect for visibility. On moonless nights, the caves come alive with an unbelievable dance of lights, turning the ocean into a living galaxy beneath the waves.

1. What is bioluminescence?

Bioluminescence is nature’s light show. Tiny microorganisms in the ocean (called plankton) create a chemical reaction when they move or are disturbed, releasing a cold, blue-green light. On our tours at Los Arcos Marine Park, every splash of your paddle or wave against the rocks sets the water glowing like stars beneath the surface.

2. Where can I see it?

While bioluminescence occurs in only a few places around the world, Los Arcos Marine Geological Sanctuary is one of the rare spots in Mexico where you can reliably see it. On our tours, we take you by boat into the dark caves and hidden coves of Los Arcos, far from city lights, so you can experience the glow at its brightest.

3. When is the best time to go?

The glow is strongest on dark nights, especially around the new moon, when there’s no moonlight to wash out the effect. Warm water also makes the plankton more active, which means summer and early fall often deliver incredible shows. Don’t worry about planning your trip around lunar cycles, its a magical experience either way.

4. What colors will I see?

Most guests see the water sparkle in shades of blue or turquoise, almost like liquid neon. Sometimes fish darting under the boat leaving streaks of light, and your boat looks like it’s painting glowing trails across the sea.

5. Can I photograph it?

Bioluminescence is tricky to capture on camera because the light is faint. Professional photographers use long-exposure settings and tripods, but even then, the glow is much stronger to the naked eye. That’s why we always tell our guests: put the phone down and enjoy the magic in real time. Of course, you’re welcome to try, but the memory in your mind will outshine any photo.

6. Do I need a tour?

Yes. To really see the phenomenon, you need to get into the darkest corners of Los Arcos—something only possible by boat. On our guided tours, we provide the equipment, local knowledge, and safe access to the coves where the glow is most vibrant. Plus, our small-group format means a more intimate, authentic experience than you’ll ever find on a big-box tour.

Why choose Mismaloya Xtreme?

🌊 100% Local Guides – Born and raised in Mismaloya.
🚐 Priority Transportation – Flexible pickup locations for direct bookings.
🔒 Flexible Policies – Easier changes and cancellations when you book direct.
🌱 Eco-Friendly – Small groups, no mass tourism, and respect for the sanctuary.
💙 Community Commitment – Every booking supports local conservation projects like Mismaloya Mágico.