Contribution starting at $3,100
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9 days (avg. $344 a day) Includes accommodations, food, and all related research costs

As a paying volunteer, you directly fund scientific research by covering permits, equipment, and other costs while supporting local vendors.

This expedition will not host teams in 2025. Instead, see Sea of Giants: Marine Life of the Baja Peninsula to support Dr. Oviedo's marine mammal research in Mexico.

BOOK WITH A $500 DEPOSIT
Ocean Health

Marine Life Conservation in Costa Rica

Location
Golfo Dulce, Costa Rica
Activity Level
Easy
Food
Shared meals
Special diets accommodated
Staff-prepared meals
A humpback whale (Megaptera novaeangliae) in Costa Rica
Two teen girls tracking a dolphin and recording the data in Costa Rica.
A beautiful ocean view in Costa Rica
Two common bottlenose dolphins (Tursiops truncatus)
Two common bottlenose dolphins (Tursiops truncatus) being tracked by a boat of  participants in Costa Rica
An  volunteer photographs two common bottlenose dolphins (Tursiops truncatus) in Costa Rica
A beautiful ocean scene n Golfo Dulce, Costa Rica
A humpback whale (Megaptera novaeangliae) in Costa Rica
Two teen girls tracking a dolphin and recording the data in Costa Rica.
A beautiful ocean view in Costa Rica
Two common bottlenose dolphins (Tursiops truncatus)
Two common bottlenose dolphins (Tursiops truncatus) being tracked by a boat of  participants in Costa Rica
An  volunteer photographs two common bottlenose dolphins (Tursiops truncatus) in Costa Rica
A beautiful ocean scene n Golfo Dulce, Costa Rica

Join researchers in the pristine wilds of Costa Rica to conduct critical research on marine mammals. Your findings may help to develop a permanent marine protected area.


An  volunteer monitors a cetacean’s GPS location.Golfo Dulce, a narrow inlet on the southern Pacific coast of Costa Rica, provides a rich habitat for cetaceans (whales and dolphins). It remains fairly pristine since the many tourists who visit Costa Rica each year haven’t quite discovered it yet—which makes now a crucial time to investigate what the ecosystem needs to remain healthy. By understanding the behavior and tracking the abundance of the marine mammals in this region, we can ensure we have the necessary information to protect them best when tourism starts in earnest in this beautiful, wild place.

For about a decade, this project has gathered information on three species of cetacean in the gulf: the pantropical spotted dolphin, the bottlenose dolphin, and the humpback whale. In studying these cetacean species, researchers hope to understand how to preserve the entirety of this beautiful marine ecosystem.

Through this research and your volunteer involvement, this project will help develop conservation plans to protect the future marine biodiversity in the gulf.

 

 

A Typical Itinerary

  • DAY 1: Arrival, orientation, training
  • DAY 2: Training on dolphin and whale behavior sampling and dolphin photo-identification
  • DAYS 3–7: Dolphin and whale surveys, photo-ID work
  • DAY 8: Time off to explore or photo-ID work at camp
  • DAY 9: Departure

 

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HOW YOU WILL HELP

In this beautiful tropical setting, you will:

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An  volunteer documents a dolphin’s GPS location, size, and behavior.
MONITOR WHALES AND DOLPHINS

By boat, you will follow groups of dolphins and whales. When someone spots a cetacean, you'll document its GPS location, size, and behavior (e.g., feeding, traveling).

A group of  volunteers follow marine animals to observe and document them.
RECORD TROPHIC WEB

Document and describe the species in multi-predator assemblages by observing aggregations of schooling fish and their predators, such as dolphins, seabirds, sharks, and rays.

A Common bottlenose dolphin (Tursiops truncatus)
PHOTO-IDENTIFY INDIVIDUALS

Back on land, you’ll help sort pictures of each dolphin species so scientists can identify individuals using the unique scars, notches, and other markings on their dorsal fins. The researchers know the dolphins in the gulf exceptionally well, so expect to hear stories about some of their most memorable encounters.

Field conditions and research needs can change the itinerary and activities. We appreciate your cooperation and understanding.

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FEEDBACK & QUESTIONS

10 Reviews on this Expedition

If you have been on this expedition, others considering attending would love to hear about your experience.
Jerri Roberts |
I was fortunate to volunteer at the most recent expedition in Gulfo Dolce, Costa Rica, assisting marine biologists in studying the behavior of their resident whales and dolphins. Since I was a little girl I’ve always loved marine life and this experience was like something out of a movie. The picturesque jungle painting a background for the many encounters we had with dolphins and humpback whales. The staff was incredibly knowledgeable and it was inspiring to see how much they are truly emotionally invested in this project and in these animals. The lodging was beautiful (although very warm and humid because you’re in the rainforest), and throughout the expedition you’re so immersed in this raw wildlife that you have no choice but to be present the entire time you’re there. I learned so much about these beautiful animals and I’m so grateful for organizations like this who are striving to protect them. This was an experience of a lifetime. 
Susan Ashburn |
Our location on the Gulfo Dolce was exceptionally beautiful. The food was wonderful and nutritious, with local dishes and with lots of fresh fruits. I loved the fresh fruit juice every morning along with the coffee. We were a well-matched volunteer team of two. David, who headed the project for us, was extremely knowledgeable and passionate about this research and conservation effort. His ability to utilize volunteers’ abilities and to share the joy in our experiences was exceptional. We were out on the water for ~ 4 hours each morning and saw cetaceans 5 of 6 days. These included bottlenose dolphins, spotted dolphins, and false killer whales. We had lunch and rested after returning to land. We did data entry late afternoon. We met via video with [Lead Scientist] Dr. Lenin to learn more about the project and review our day’s data. Always, dinner was delicious. Evenings were relaxing with a beautiful night sky and fireflies
Antoinette Judelsohn |
This expedition to Costa Rica was one of the most exhilarating experiences I've ever had. I'm not typically a water person, however, I loved our time in the boat. The sky and clouds were gorgeous and the breeze was refreshing and cooling from the heat of the day. Then a dolphin or two or three or an entire pod is spotted and the excitement and thrill of witnessing these amazing creatures in their natural habitat are just out of this world. We were busy taking photos and videos of them along with documenting valuable data on location, species, water temperature, etc. We were like children waking up to the best Christmas ever. And it was wonderful to have both [Field Team Leader] David and the boat captain thrilled as much as we were. We were fortunate to have the opportunity to witness a group of male dolphins putting on a spectacular performance to attract female attention. They were literally flying in the air. So many of them, one right after the other or two or three at the same time. Made me wish I were a wildlife photographer. In the early evening, we had zoom classes with [Lead Scientist] Lenin Enrique Oviedo Correa who filled in a lot of detailed information on biological data to sustain the preservation of this critical habitat. You could feel his love and dedication for Golfo Dulce and its cetaceans. We were fed very well by Azucena who prepared our 3 daily meals all gluten-free. Accommodations are very basic so one needs to be prepared with that which we pretty much were from previous travel experiences. On our day off [Field Team Leader] David made arrangements for us to hike into the rainforest with a guide. David also accompanied us to ensure our safety and interpret and explain some wonders of the rainforest. When we left for our flight back to San Jose, David stayed with us until we got on the plane. We were very much taken care of. All in all, a fabulous experience!

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