OCEAN ADVENTURES · AFTER DARK

Bioluminescence

Once it gets dark, you’ll head out to explore one of the region’s most fascinating natural phenomena: bioluminescence.

As you paddle or swim, you’ll see the water light up with every movement, a reaction caused by microscopic organisms in the ocean.

While bioluminescence can happen in many coastal areas, it’s not always visible. This tour takes you to a bay where high concentrations occur regularly, offering a reliable and impressive experience.

Bioluminescence experience on the Osa Peninsula
THE PHENOMENON

How It Works

Bioluminescence is caused by microscopic organisms in the water that emit light when disturbed by movement.

The effect is visible to the naked eye: every stroke of a paddle and every movement through the water produces a flash of cold blue light.

The tour visits a specific bay where concentrations are reliably high. It is not available during full moon, when ambient light reduces the effect.

DETAILS

What You Need to Know

Duration 3 hours
Schedule Afternoon · 4:30 PM
Difficulty Easy
Minimum Age 6 years old
Availability Not available during full moon
Operation Partner operated
Restrictions Children under 14 must be accompanied by an adult in a double kayak
What to Bring Extra clothes, water shoes or sandals, and swimsuit
Partner-operated experience · Contact concierge to book
Nighttime ocean experience on the Osa Peninsula
PLAN YOUR STAY

See the Pacific come alive after dark.

Our team is here to help you plan your stay and arrange your experiences at Lapa Rios Lodge.