
Balandra Expedition
Filter eDNA and snorkel with sea lions in the world’s clearest lagoon.
Sea of Cortez - La Paz, Baja California Sur
Go beyond sightseeing and become part of a real citizen science expedition in the Sea of Cortez.
Collect environmental DNA (eDNA) from seawater samples, observe live plankton through our field microscope station, and fund complete genomic sequencing to publish your discoveries to the global GenBank database.
Strictly limited to 6–8 guests to guarantee every explorer gets hands-on experience with the eDNA vacuum filtration and live microscopy.
Read our traveler reviews on GoogleDiscover the Science
Think of the ocean as a giant crime scene, and we are the forensic team. Every fish, sea lion, and microscopic creature leaves behind tiny genetic "fingerprints"—invisible traces of DNA drifting in the current. Just like a scanner reads a barcode at the supermarket to identify a specific product, we filter a single liter of seawater to capture these genetic barcodes (environmental DNA). This allows us to identify species that are threatened, rare, elusive, or potentially harmfull to the ecosystem.
Watch this short explainer to see our science in action!
Featured Expeditions
Every expedition combines an iconic Baja location with a real science experience.

Filter eDNA and snorkel with sea lions in the world’s clearest lagoon.

High-velocity exploration and field science at the most biodiverse island in Baja.

Conscious navigation, onboard lab, and quiet science in the bay.

Sail to La Dispensa reef with our custom floating lab station on deck.

Coastal terrestrial safari with field biological sampling and sandboarding.

Rugged land transport to mangrove forests with estuarine water sampling.

We bring the molecular lab and PhD crew directly to your private vessel or seaside location.

Snorkel with whalesharks, collect eDNA, and observe their microscopic food.

Witness the pelagic frenzy in Mag Bay and collect open-ocean samples. Transport from La Paz is extra.
Why this is different
Same blue water. A hands-on scientific expedition.
What you'll experience
From Balandra’s turquoise lagoon to the red cliffs of Espíritu Santo.
Filter seawater for environmental DNA the way researchers do.
Watch plankton dance through a field microscope on board.
Understand the food web that keeps the Sea of Cortez alive.
Your samples feed real biodiversity datasets.
Photos, footage, and memories you’ll be telling for years.
From our guests
Camila took us swimming to a beautiful reef, we collected some samples and observed plankton after eating lunch on the beach! The experience is unique, highly recommended— Nora E.B.U. · Mexico
Meet your guide
Your expedition is guided by Dr. Camila Mac Loughlin, a PhD marine researcher and professional snorkel guide based in La Paz. Driven by a deep connection to the Sea of Cortez, Camila bridges the gap between the laboratory and the ocean. She transforms traditional boat tours into hands-on scientific adventures, helping curious travelers uncover the hidden stories of Baja's incredible marine life.
PhD Marine Scientist · Expedition Leader
Sequencing Angel program
Sequencing Angels help fund advanced DNA sequencing of the samples collected on our expeditions. Your contribution becomes part of public biodiversity databases — a permanent record of life in the Gulf of California.
Learn About Sequencing AngelFrequently asked questions
Not at all! Our expeditions are designed for curious travelers of all backgrounds. Our PhD marine biologists guide you step-by-step through every part of the sampling and field microscopy process.
Yes! We have successfully hosted children starting from 9 years old[cite: 1]. Participants under 9 are welcome and require direct adult supervision during water collection and field activities[cite: 1].
Not necessarily! Our standard base rate covers private groups of up to 8 participants. However, smaller parties can join our waitlist or shared departures, and we comfortably accommodate larger groups up to 12[cite: 1].
Depending on your itinerary, you may encounter wild sea lions, whale sharks (seasonal), mobula rays, dolphins, diverse reef fish, and rich bird biodiversity in the protected waters of the Gulf of California.
Bring your swimsuit, towel, comfortable layers (windproof-waterproof jacket during winter), reef-safe sun protection, and natural curiosity. Specific items like gourmet meals, catering options, or extra equipment vary by tour and are detailed in each expedition description.
Not at all! While snorkeling is a popular way to explore on our aquatic tours (like Balandra and Espíritu Santo), it is entirely optional. Water and plankton samples can be collected directly from the vessel or shoreline, making our scientific activities accessible to everyone regardless of whether they choose to enter the water or not[cite: 1].
Using professional-grade portable filtration systems, we filter three 1-liter samples of seawater, and a field negative control on site. The filter captures microscopic traces of environmental DNA (eDNA) shed by marine life.
For our Standard Package, your samples are safely stored for future sequencing. If you choose our Premium Package or join as a Sequencing Angel, your sample goes straight through our complete genomic pipeline, and your discoveries are permanently published under your name in the global GenBank database!
Limited dates each month. Reserve your expedition before the season fills.
Schedule Your Expedition