Your source for school trips, outdoor adventures, current weather conditions and more.

Student and tourist groups of all ages are welcomed to participate in an outdoor adventure with us, stay at our field station and learn from our knowledgeable staff through slide presentations, tours and talks. Explore the tidepools, enjoy a bird or kayak tour in Estero Morúa, or stop by for one of our free public talks about the sea and the desert. Our gardens and fin whale exhibit make any visit fun and educational. We encourage groups of six or more to contact us for a special tour or activity.  

*** Our field station and main office (Edificio Agustín Cortés) is open Monday to Saturday, 9am - 5pm. Our Eco Gift Shop and Earthship Visitor's Center is open the same hours, along with 10am - 2pm on Sundays.

Tour operators visiting Puerto Peñasco are invited to include a memorable CEDO activity in your tour of the area. We offer mini-ecotours, natural history talks and slideshows tailored for large groups. Find out more by contacting This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

Eco-Adventures
CEDO offers unique opportunities to explore the sea and the desert. Join us for a hike in North America’s largest sand sea, a paddle through the channels of Estero Morúa, or an exploration of the diverse underwater world of tidepools.

Wet Feet Ocean Camp
Our annual summer camp is perfect for the young marine biologist, or any child who is interested in the ocean and the Gulf of California. The overnight camp is for youth ages 10 -13. For five days and four nights children will explore the Northern Gulf of California intertidal zone and surrounding Sonoran Desert. Accommodation will be provided at the CEDO field station in Puerto Peñasco, Sonora, Mexico. Don't let your child miss out.

Events Calendar 
Find out what's going on at CEDO, including our eco-tours, natural history talks and events involving the Upper Gulf of California and Sonoran Desert. Figure out what time works best for you and make a reservation today!

Visiting Schools
CEDO welcomes researchers, school groups and other organizations to use CEDO’s dormitories, facilities and teaching resources to support field work and hands-on learning. Find out more about our facilities and programs, and how to make a reservation. Click below for documents describing our field station programs and to view our Reservation Form. The Microsoft Word Documents can be filled out electronically and emailed back to CEDO at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it , or filled out and mailed to PO Box 44208 Tucson, AZ 85733.
- Field Station Programs 2009 (Microsoft Word Document)
- Reservation Form (Microsoft Word Document)

Nature Talks & Presentations
A CEDO tradition! Bring your family to learn about the Gulf of California’s extreme tides, the endangered Vaquita porpoise and CEDO’s current projects. Be sure to check out the wealth of regional information and images showcase in our slideshow presentations.  

Exhibits & Gardens
A casual visitor to CEDO may enjoy a self-guided tour of our botanical garden, take a close up look at our 55 foot fin whale skeleton, browse the books and treasures in our gift shop and more.

Maps & Directions
Find us in Puerto Peñasco.

Reservations & Fees
Reserve your spot at CEDO today. More information on our reservation policy and rates.  

Current Weather
Check out the current weather conditions in Puerto Peñasco and review climate data summaries.