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Welcome to The Dive Log, your ultimate resource for scuba diving in Guanacaste, Costa Rica. Our posts are designed to provide you with expert knowledge and insights into the Pacific waters off the coast of Playa Potrero and Flamingo. We'll share our favorite dive spots, including the world-famous Catalina Islands and Bat Islands, and showcase the natural beauty of the islands and dive spots around the region. We proudly service clients from popular beach towns like Playa Flamingo, Playa Potrero, Playa del Coco, and Tamarindo, and our blog is dedicated to showcasing the abundant marine life that makes this area the best scuba diving in Costa Rica. As a dive operation deeply committed to the health of our oceans, we also highlight the importance of conservation, our sustainable practices, and how every dive contributes to preserving this stunning underwater world.
Read The Latest Dive Log
Published on: November 21, 2025
Manta Ray Diving Guanacaste | Manta Ray Season Has Arrived! Starting mid-November, the magnificent manta rays return to Guanacaste’s waters! These gentle giants can have a wingspan up to 7 meters and are famous for their graceful acrobatics in the water. As filter feeders, they glide with their mouths open to eat plankton, making them […]
Published on: October 20, 2025
The Best Scuba Diving in Costa Rica: Your Guanacaste Dive Site Spotlight Pura Vida isn’t just a greeting in Costa Rica—it’s a way of life that extends deep beneath the Pacific waves. If you’ve been searching for the absolute best Costa Rica diving experience, look no further than the sun-drenched, rugged Pacific coastline of Guanacaste. […]
Published on: October 20, 2025
Announcing Our New Beachfront Dive Center – Featuring an On-Site Pool! Welcome to our very first newsletter! From now on, we’ll be sending you monthly updates packed with exciting diving events, upcoming trips, and all the latest news from our community. Be sure to stop by and visit us at our new beachfront location, within […]
Published on: September 17, 2025
How To Get PADI Certified in Costa Rica | A Guanacaste Experience The journey to become a certified scuba diver begins with the PADI Open Water Diver course. At Under The Sea Diving in Playa Potrero, Guanacaste, Costa Rica, this comprehensive course provides the foundational knowledge and in-water skills needed to explore the ocean with […]
Published on: September 17, 2025
Scuba Diving Bat Islands | The Guanacaste Expedition The Guanacaste province in Costa Rica is home to some of the most dynamic scuba diving in the Pacific. Just offshore, sitting within the vast expanse of Santa Rosa National Park, is a group of rugged volcanic rock formations known as the Bat Islands. This place is […]
Published on: September 12, 2025
The Best Diving in Guanacaste, Costa Rica Venturing into the waters off Guanacaste offers a glimpse into a marine world that’s anything but boring. As a dive instructor, I can tell you that the main draw here isn’t just one type of creature, but the sheer number of things you can see, from the macro […]
Published on: September 12, 2025
Discover The Best Scuba Diving in Playa Flamingo, Guanacaste As an instructor, I’ve found that the sheer volume of life around Playa Flamingo is what makes it a standout. This part of Guanacaste, Costa Rica, offers direct access to some of the best dive sites in the region. While it may not be as well-known […]
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