San Ignacio Lagoon sits at the center of one of the most remarkable wildlife recovery stories of the past century, and the gray whale is at the heart of it.

Baja Ecotours has operated from Campo Cortez on the lagoon’s edge since 1989, and our team has watched gray whale science evolve from simple boat counts to satellite tags, genetic studies, and underwater listening devices. This guide gathers what curious travelers most want to know about gray whale conservation: how the whales are doing, what threatens them, and how anyone, whether you visit the lagoon or not, can help protect them.

Where Do Gray Whales Migrate, And How Are They Doing Today?

The eastern North Pacific (ENP) gray whale (Eschrichtius robustus) is one of the more hopeful stories in whale conservation. After commercial whaling nearly wiped them out in the 19th and early 20th centuries, protections under the U.S. Marine Mammal Protection Act (MMPA) allowed the population to recover to around 19,000-27,000 animals by the 2010s, close to what scientists believe existed before whaling began.

That recovery has not been a straight line. In recent years, gray whales have gone through stretches where more whales than usual turned up stranded or in poor condition, tied to prey shortages in their Arctic feeding grounds and warming ocean conditions. NOAA Fisheries tracks these events and publishes current population estimates. The most recent count puts the population between roughly 11,700 and 14,450 whales, down from a high of nearly 27,000 in 2016. You can see the current numbers on NOAA’s gray whale population page.

A separate, much smaller group, the western North Pacific gray whale, is a serious concern of its own. Fewer than 300 individuals are thought to remain, and researchers treat this population as critically endangered.

The migration itself is one of the longest made by any mammal on Earth, roughly 10,000 to 12,000 miles round trip every year. Whales leave their Arctic feeding grounds from September through December and travel south to the calving lagoons of Baja California Sur. Laguna San Ignacio, Bahia Magdalena, and Laguna Ojo de Liebre are the main calving and mating sites. The return trip north runs February through June, with mothers and their new calves taking the final stretch more slowly. Our gray whale migration guide covers this journey in more detail, including when to plan a visit.

How Are Gray Whales Monitored, And How Can You See the Data?

Researchers watch gray whales in two ways: counting the whole population to track overall numbers, and following individual whales over years or even decades.

Population counts come from boat and airplane surveys, shore-based counters watching the whales pass by, and underwater microphones that pick up whale calls across large areas. Individual whales are recognized through photo-identification, matching the natural markings on their skin the way you’d recognize a friend’s face. Some whales photographed at San Ignacio Lagoon have been tracked across multiple decades. Drones now let researchers photograph whales from above to check their body condition without getting close, and tiny suction-cup tags track where whales go and how deep they dive.

The main organizations behind this work are NOAA Fisheries in the United States and, closer to the lagoon, Gray Whale Research in Mexico (formerly the Laguna San Ignacio Ecosystem Science Program), which has run the longest continuous gray whale study at San Ignacio Lagoon and Bahia Magdalena.

If you want to see the numbers yourself, several places make this easy:

• NOAA Fisheries – Gray Whale species page, for the basics on population status and biology
• NOAA Fisheries – Gray Whale Population Abundance, for the current count
• Gray Whale Research in Mexico – Annual Reports, for what researchers are seeing directly at the lagoons
• Gray Whale Research in Mexico – Weekly Whale Counts, updated through the season
• OBIS-SEAMAP, which maps whale sightings and tracking data from many research programs in one place

If you are ready to move from reading about gray whales to doing something for them, our how to participate in gray whale conservation page lays out the options.

What Threatens Gray Whales Today?

Gray whales face a mix of threats, some well understood and others still being studied.

Getting tangled in fishing gear is one of the most common causes of injury and death. Ropes, nets, and traps cause immediate harm during the entanglement and lasting injury long after a whale breaks free. Tangled whales eat less efficiently, may shift their migration timing, and show signs of chronic stress, all of which can lower how many calves survive.

Being struck by boats can be immediately fatal or leave whales with injuries that affect them for the rest of their lives. Even without a direct hit, heavy boat traffic can push whales out of good feeding areas, leaving them thinner and less able to reproduce.

Pollution builds up in a whale’s blubber over its lifetime. Chemical pollutants and heavy metals weaken the immune and reproductive systems, making whales more prone to disease and, in heavily affected areas, less likely to raise a healthy calf.

Less food to eat, driven by overfishing, habitat loss, and a warming ocean, leaves whales visibly thinner and produces fewer calves in bad years. Multi-year declines tied to poor feeding years are well documented in gray whale research. More on how this plays out at the population level is on our gray whale population status and threats page.

Disease often follows the other stressors. A whale weakened by hunger or pollution is more vulnerable to illness, which is part of why researchers sometimes see spikes in whale deaths, known as unusual mortality events, following hard feeding years.

Climate change ties all of this together. Warming water shifts where prey lives, changes ocean currents, and shrinks the Arctic sea ice gray whales depend on. NOAA Fisheries documented exactly this pattern during the 2019-2023 unusual mortality event, when hundreds of gray whales were found stranded from Mexico to Alaska, most of them malnourished.

What Happens When a Large Number of Whales Die Unexpectedly?

When stranding networks notice more whale deaths than usual, it can be declared an “unusual mortality event,” or UME. It typically starts with someone, a fisherman, a researcher, a beachgoer, noticing more dead or struggling whales than normal and reporting it.

Trained response teams then document the scene, carefully collect samples, and perform a wildlife necropsy (an animal autopsy) to understand what happened: was it starvation, illness, a ship strike, something else? The findings feed into shared databases so researchers and wildlife managers across the whale’s entire range can see the full picture, not just what happened on one beach.

Depending on what they find, agencies may respond with temporary fishing closures, investigations into a pollution source, or closer monitoring of the area. NOAA Fisheries keeps the public updated as findings develop, and the most recent event, which ran from 2018 through 2023, is documented in detail on their site.

What Rules Protect Gray Whales?

In the United States, two federal laws do most of the work. The Marine Mammal Protection Act (MMPA) makes it illegal to harass or harm marine mammals without special authorization. The Endangered Species Act (ESA) adds extra protection for species at risk and governs research permits.

Across borders, several countries and international agreements work together because gray whales cross so many jurisdictions on their migration. The United States, Canada, Mexico, and Russia coordinate on data sharing, stranding response, and monitoring.

Protected areas add another layer. Marine sanctuaries and reserves set seasonal rules, boat speed limits, and no-fishing zones near places whales depend on most. El Vizcaino Biosphere Reserve, which includes San Ignacio Lagoon and is recognized by UNESCO as the Whale Sanctuary of El Vizcaino, is one of the strongest examples of this kind of protection working at scale.

It’s worth being clear here: these protections are designed around real threats like ship strikes, entanglement, and harassment by boats that don’t know or don’t follow the rules. They are not designed to prevent the rare, wondrous moments when a whale in San Ignacio Lagoon chooses to approach a small boat on its own. That distinction matters, and we cover exactly how it works later in this guide and on our how to participate in gray whale conservation page.

Why Do Some Gray Whales Get Special Genetic Attention?

Not every gray whale belongs to the same group, and knowing which whales are genetically distinct helps wildlife managers protect them more effectively.

Genetic testing tells researchers which whales in different areas are closely related and which are essentially separate populations that need their own protection plans. When whales in two areas turn out to be closely related, managers can coordinate protection instead of treating them as entirely separate problems.

This matters directly for San Ignacio Lagoon. Knowing whether a whale born here stays with the larger eastern Pacific population or turns up somewhere unexpected helps researchers understand how connected, and how vulnerable, this calving ground really is.

How Can Fishing and Shipping Practices Better Protect Whales?

Reducing entanglement and ship strikes comes down to changing gear, routes, and timing, and all of it carries real costs for the people involved.

On the fishing side, newer gear designs are helping. “Ropeless” trap systems release gear remotely instead of leaving a line running to the surface, which is the main way whales get tangled. Other fixes include lines designed to break under a whale’s weight and brighter, more visible gear markings so entangled whales can be spotted and helped faster.

Seasonal fishing closures, timed to when whales are actually present based on real monitoring data, keep gear out of the water when it matters most. On the shipping side, simply slowing down, to 10 knots or less in high-traffic whale areas, has been shown to meaningfully cut the risk of a fatal strike.

What’s Being Done to Protect and Restore Whale Habitat?

Protecting the places whales feed and calve is one of the most direct things conservation can do. Seasonal fishing closures and protected feeding areas near Laguna San Ignacio and Bahia Magdalena give whales more room to feed well and recover their strength.

Restoring coastal habitat, salt marshes, seagrass beds, and mangroves, supports the wider food web that whales and countless other species rely on. Marine protected areas work best when local communities are genuinely part of managing them, which is exactly the model San Ignacio Lagoon has followed for decades.

Our San Ignacio Lagoon conservation programs page walks through how these ideas work in practice at one of the best-protected calving lagoons in the world, and our gray whale maternal and calf behavior page covers how habitat protection specifically supports calves in their first weeks of life.

What Questions Are Researchers Still Trying to Answer?

Even after decades of study, gray whale researchers still have real gaps to fill.

The biggest open question is how climate change, prey availability, and whale health interact over the long run, and whether the population can keep adapting at the pace the ocean is changing. Long-term data on what whales are actually finding to eat in the Arctic is still thin at most feeding sites.

Tracking coverage is also uneven. Better tagging and listening-device coverage along the migration route, and especially for the small western Pacific population, would tell researchers much more about how connected different groups of whales really are.

The good news is that funding for this work increasingly comes from partnerships, research grants tied to climate and prey studies, long-term monitoring support for key sites like Laguna San Ignacio, and collaborations with the fishing and shipping industries that have a direct stake in solving these problems.

Gray Whale FAQs

Gray whale encounters raise a lot of practical questions, from how to report a stranded animal to what rules apply to recreational boat approaches. The answers below cover the most common situations. For background on planning a visit to the lagoon, see the baja whale watching guide or the page on choosing a whale watching operator.

1. How can the public report a stranded or injured whale?

Call the nearest marine mammal stranding network or local coast guard immediately. Give your GPS coordinates or a precise landmark description, the time, tide level, and any visible injuries or behaviors. Take photos and short video from a safe distance. Do not touch the animal, try to move it, or let people or pets approach. Provide your name and contact details so responders can reach you, and follow dispatcher instructions until a trained team arrives.

2. Are there safe guidelines for viewing gray whales from shore?

Stay at least 100 meters (330 feet) from any gray whale, and check local marine protected area rules before visiting a site, since some locations have stricter requirements. The best sighting conditions are usually at low-tide vantage points during winter and early spring. Move slowly and quietly, use binoculars or a spotting scope rather than approaching, and avoid using drones near the animals. Log sightings to a citizen science program and report any injured animals to local authorities immediately.

3. What permits are required for gray whale research activities?

Most gray whale research in U.S. waters requires authorization from NOAA Fisheries under the MMPA and ESA. In Mexico, research activities require permits from SEMARNAT, the federal environmental authority. Photo-ID from a lawful viewing distance generally does not require a separate permit, but close approaches near mother-calf pairs may. This kind of permitting is for scientific research, not for whale-watching trips like ours, which operate under a separate set of tour-operator permits covered in the next question.

4. Is it legal to get close to gray whales at San Ignacio Lagoon?

Yes. Whale watching at San Ignacio Lagoon, including the close “friendly whale” encounters the lagoon is known for, is legal and tightly regulated. The lagoon sits in Mexican waters inside El Vizcaino Biosphere Reserve, and whale watching there operates under Mexico’s NOM-131-SEMARNAT-2010 and the community rules set by ARIC, the local whale-watching association. Licensed operators work under permits, and every trip follows strict limits.

What stays illegal, here and almost everywhere else, is harassing a whale: chasing it, blocking its path, herding it, or forcing it to change direction. That distinction is the whole point. Boats at San Ignacio never chase or pursue a whale. The close encounters happen only when a gray whale approaches a boat on its own, and once it does, the rules cap how many boats can be near it: no more than two at a time, taking turns, never crowding the animal. You can read the full community rules on our ARIC whale-watching rules page.

So the close encounters people travel here for are not a loophole or an exception to the law. They are a regulated, permitted activity in which the whale, not the boat, decides when to come say hello.

5. How does ocean noise affect gray whale behavior?

Constant noise from shipping and industrial activity can drown out gray whale calls and make it harder for them to navigate and find food. Whales respond by changing how they move, avoiding certain feeding areas, or cutting migration and feeding short. Research using tags and hormone testing has linked heavy noise exposure to higher stress levels in whales, which can affect reproduction and calf survival over time. Reducing vessel speed, creating quiet zones near known whale habitat, and using quieter engine technology all help.

If you want to understand gray whale conservation through direct experience, Baja Ecotours has guided small groups through San Ignacio Lagoon since 1989. Our approach to whale encounters is built on the same conservation principles described throughout this guide. We would be happy to help you plan a visit that fits your timing and interests. Reach us at +1-619-819-2966 or toll-free at 877-506-0557.