• We offer amazing nature tours focusing on real eco tourism activities. Our trips include half day and full day tours to National Parks like Rincon de la Vieja, Palo Verde, Santa Rosa and many more. Visit volcanoes, tropical forests, beaches, wetlands and other highlights in Guanacaste.

  • Our adventure trips include canopy tours ( zip lines ), canyoning or canyoneering, white water rafting in wild rivers, hiking tours and boat tours in one of the many rivers. Enjoy unparalleled adventures and fantastic nature destinations.

  • Enjoy the fantastic beaches that Guanacaste offers. Go snorkeling, scuba diving, sailing along the colorful and incredible coastline of Guanacaste. We offer amazing and unique private tours to secluded and pristine beaches.

  • We also offer first class transportation. Our fleet of modern and well equipped minivans will take you anywhere you want to go. Discover the amazing province of Guanacaste, home of steaming volcanoes, hot water springs, incredible beaches, horseback riding and more.

We are Yellowfin Tours, your Guanacaste Tour Company.

Your full service company for nature tours, adventure experiences, family trips and wildlife trips. We are located in Flamingo, a beautiful beach community and center for all the best nature and adventure tours being offered in Guanacaste.

Best Selling Tours


Our clients love our catamaran sailing trips. We offer either morning departures and also afternoon/evening sunset tours.

Combo Tours

Our combo tours will take you to the vast Rincon de la Vieja National Park and its mighty volcano. Hot springs, canopy, canyoning and more.


Kayaking is one of the most eco friendly activities we offer. Silently explore the dense tropical mangrove forests and the blue ocean.


Snorkeling is a must in Guanacaste. The abrupt coast and rugged rocky pinnacles created a perfect habitat for fish and marine wildlife.


"I cannot say enough wonderful things about this company. Honestly, Dervin (the owner of the company) and his group of drivers and tour guides were the best part about our trip to Costa Rica. They were very knowledgeable about the area, and very professional, but also super friendly and fun. They all went out of their way to make sure that we were taken care of , safe, and that we were happy with our experiences. I will absolutely use Yellowfin every time I visit Costa Rica. Thank you !!"
Andi Reden

"My family of four, along with my sister and her family and our parents stayed at the Villa Corazon del Mar this summer for a week. We were greeted at the airport by Greavam. He and Pepe brought all twelve of us to eat and to the grocery store prior to getting to the villa. Each day Greavam or Dervin was with us or organizing our activities. Some things that we did include horseback riding, Lazy Lizard catamaran and snorkeling, jet ski rentals, watching sea turtles lay eggs in Playa Ostional, and the canopy tours/ mud bath/ and hot springs in Rincon de la Vieja. We even ate supper with Drevin, his wife, Anna, and children (Daniel, Allen, and Catalina) and Greavam on our way back from watching the Ridley sea turtles laying eggs....which only happens four days twice a year. This shows that the reviews are "spot on" when it reads that these guys treat you like family. Both men taught all of my family things that we will always remember. We were all truly impressed with Yellowfin Sporting Charters services, but more importantly with the hospitality that these wonderful people have shared with us!!!"

"I had an amazing trip to Costa Rica and owe a big thank you to Dervin for the experience! Dervin was very accommodating of our large group and very knowledgable about the country. He answered all our questions and was very informative! He took us to local hang outs off the beaten track so we could experience the real Costa Rica! He took us out on a catamaran and even brought us fresh shrimp because we had request it. He takes the time to get to know his clients and customizes trips for you! I can't say enough good things about Dervin and Yellowfin Sportfishing! Choose Dervin next time you are in Costa Rica, You will not be disappointed!"

"Thanks to my dad and friends, I've been dealing with Mr. Dervin ever since I went to Costa Rica for the first time! I'm 18 and have known him for about 7 years and nothing I could say about him could match up to how truly amazing he really is! Such a genuine guy, and the service he provides is ABSOLUTELY AMAZING. You're basically royalty with Mr. Dervin! He's very adventurous and any activity we encounter he takes care of us always. He recently set up a very important project for my school in Maryland and I've had nothing but outrageous results. Mr. Dervin's the man to go to; I wouldn't chose another tour guide or staff for anything else! I just got back from vacation, (with Dervin tagging along thank goodness), and another amazing vacation came out of it! Mr. Dervin is your go to man! You won't regret it!"