Expedition

Marine Biology Diving Expedition

Dive into Costa Rica’s Pacific waters and explore vibrant marine ecosystems while working alongside leading marine biologists.

Next Trip

April 17–24, 2027

Duration

7 Nights / 8 Days

Starting at

$3800 USD

(tax included)

Theme

Conservation, Research, Adventure

Location

Guanacaste Province

Expedition

Explore Beneath the Surface

Spots are Limited

For Custom Expedition Inquiry

This expedition takes place along Costa Rica’s Pacific coast in the Guanacaste region, where warm waters and nutrient-rich currents support an incredible diversity of marine life.

You’ll spend your days diving into these ecosystems, exploring volcanic rock formations and open water environments alongside experienced dive instructors and marine biologists. Observe sharks, rays, turtles, and other marine species while contributing to ongoing research and monitoring efforts.

Each dive offers a new perspective — from close encounters with marine wildlife to a deeper understanding of the ecosystems that support them.

Participants are required to have a minimum of an active Open Water scuba certification to join this expedition. For those who are not yet certified, there is also the option to add an Open Water training course to the beginning of the trip prior to the expedition activities.

When you’re not in the water, you’ll learn from experts, review findings, and experience coastal life in a relaxed beachside setting. With accommodations, transportation, select meals, and logistics coordinated for you, the experience is designed to let you focus fully on exploration, learning, and adventure.

Accomodations

Stay in a boutique hotel in Playas del Coco, offering comfortable accommodations close to dive sites and coastal amenities.

Arrive in Liberia at Daniel Oduber Quirós International Airport, where our team will meet you and transfer you to the beautiful beach town of Playas del Coco. All in-country transportation is included and typically takes place by private bus or van.

Designed For: Scuba divers, marine biology students, marine enthusiasts

Popular With: Eco-travelers, wildlife lovers, nature enthusiasts, and travelers seeking more meaningful experiences.

Group Type: Adventure seekers, eco-tourists, wildlife lovers,  Individuals, small groups

Daily scuba dives, marine species monitoring, data collection, and working alongside marine biologists to study shark, turtle, and ray populations.

Testimonials

What It’s Really Like in the Field

Real experiences from people who’ve been out there.

“Thank you for making 2025 the best year of my life and providing me with the most incredible summer experience! I’m so very grateful!”
Rated 5 out of 5

Bentley Huffington

Mondo Intern and Expedition Participant

“It was a beautiful day. It’s nice when nature is combined with true human connection, everything felt seamless.”
Rated 5 out of 5

Eli

Mondo Day Tour Participant

“Such an amazing day and authentic experience! It was good for the soul and I needed it!”
Rated 5 out of 5

Casey

Mondo Day Tour Participant

“The trip was a perfect mix of field research and eco-tourism, leaving me with a great understanding of wildlife monitoring and Costa Rican history.”
Rated 5 out of 5

Cayla Gray

Cloud Forest Research Expedition Participant

“Sharing my knowledge of Costa Rica’s incredible biodiversity and many other stunning areas has been an unforgettable experience. I’m truly grateful to Mondo Eco-Expeditions.”
Rated 5 out of 5

Orlando Vargas

Mondo Naturalist Guide

“From hiking through lush forests to helping with real conservation projects, every day was meaningful and exciting.”
Rated 5 out of 5

Josh M

Cloud Forest Research Expedition Participant

Our Partners

The trusted organizations, guides, and local experts who help bring each expedition to life.

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