Marco is an amazing guide. We had the opportunity to dive with him while other members of our group were doing a discovery dive. He is patient, aware of everything, and showed us some beautiful ocean creatures! Looking forward to the next time I am in Costa Rica to dive with Marco.

Marco was fantastic! He scuba certified our entire family and took excellent care of me, my husband, and our two boys, ages 14 and 17. He was professional, patient, and incredibly easy to work with. Marco made sure we felt safe, confident, and comfortable in the water while also ensuring we had an amazing time. We couldn't have asked for a better instructor and highly recommend him to anyone looking to get scuba certified!

We had one of best and most exciting dives in last couple years: Diving Bat Island to see the Bull Sharks. We saw many (10+ on first) and 5-6 on second. Visibility was extraordinary! Super pleasant support. Can highly recommend

We had a great experience diving with Uncharted Dive Center in Costa Rica. Marco was our main contact and was excellent to deal with—he spoke English well, was quick to respond, and made communication through WhatsApp easy from start to finish. We dove at Las Catalinas and saw white-tip reef sharks, eagle rays, moray eels, octopuses, and a variety of tropical fish. Marine life wasn't especially dense during our visit in July, but we still had some great encounters. One thing to be aware of is that the ocean conditions can be challenging. If you're prone to seasickness, this may not be the best dive site, as the boat ride was rough and some dive sites had fairly strong currents. Overall, we had a positive experience and appreciated the professionalism and organization of the team.

My son and I completed our PADI Open Water Diver certification with Marco from Uncharted Diving in Costa Rica this past weekend, and the experience was outstanding. Marco is not only an excellent instructor—knowledgeable, patient, and safety-focused—but also a genuinely great person who made the entire course enjoyable and confidence-building. The diving around the Catalina Islands was absolutely incredible, with amazing marine life and beautiful underwater scenery. Marco's professionalism and passion for diving made the experience even more memorable. I highly recommend Marco and Uncharted Diving to anyone looking to learn to dive or explore some of Costa Rica's best dive sites.