Orcas in the Sea of Cortez: When, Where and What We Actually Know

Orcas are my favorite animal.

They were long before I started working in the ocean, and after more than seven years at sea, they still are — perhaps more than ever. Not because of what you see in documentaries, but because of something you only really understand when you have one in front of you: the feeling that there is someone on the other side of that eye.

the feeling that there is someone on the other side of that eye.

I have spent entire days looking for them in La Ventana.

Days leaving at sunrise with Erik, crossing the Cerralvo Channel from one end to the other, staring at the horizon until your eyes hurt, and returning to the villa at sunset without seeing a single dorsal fin. And then, one day, when we had almost stopped looking for them, we didn’t find the orcas.

They found us.

In this guide, I’ll explain when and where orcas appear in Baja California Sur, whether there are resident orcas in the Sea of Cortez, what they hunt, why they use these waters, your realistic chances of seeing them, and what we currently know about swimming with orcas in La Ventana.

Quick answer: Orcas can be encountered throughout the Gulf of California, also known as the Sea of Cortez, at different times of year. La Ventana and the Cerralvo Channel have become particularly well known for encounters during spring and early summer, overlapping with the seasonal presence of large mobula aggregations. There is no confirmed resident population in the scientific sense: identified individuals and groups move through the Gulf and some return repeatedly. Orcas here have been documented hunting rays, sharks, whale sharks, ocean sunfish and other prey. Sightings are never guaranteed.

What is the best month to see orcas in La Ventana?

If I were planning an ocean safari that gave me the opportunity to encounter orcas while also experiencing one of Baja’s major seasonal wildlife events, I would choose May or June.

Those months overlap with the spring aggregations of Mobula munkiana, generally calmer conditions after the winter northerly winds, and a period when orcas are regularly reported in the southern Gulf of California.

But this distinction matters:

May and June are not an “orca season” in the sense of a predictable migration. I have seen orcas when they supposedly weren’t expected. And I have spent entire weeks searching for them during apparently perfect conditions without seeing a single one.

That is why we never build an expedition around the promise of orcas.

We build an ocean safari during a biologically extraordinary period — and orcas are one of the animals that may appear.

EXPLORE OUR MOBULA & CETACEANS OCEAN SAFARI

Where can you see orcas in Baja California Sur?

Orcas have been documented throughout much of the Gulf of California and along the Pacific side of Baja.

Records exist from areas including Loreto, Bahía de los Ángeles, La Paz, Espíritu Santo, Cabo Pulmo, Los Cabos and Magdalena Bay.

They are not exclusive to La Ventana. But La Ventana and the channel between the Baja Peninsula and Cerralvo Island have become particularly well known for encounters in recent years. For us, this is the area we know best.

We stay in a villa directly on the beach in La Ventana and Erik picks us up from the sand in his panga. That proximity matters more than you might think. If conditions change, wildlife activity is reported or the sea suddenly goes flat in the afternoon, we can be out there within minutes.

Why are there orcas around La Ventana?

Prey availability is likely an important reason orcas use these waters. But I want to be careful here, because the simple version of this story is: the plankton comes, the mobulas follow the plankton, and the orcas follow the mobulas.

But I want to be careful here, because the simple version of this story is:

the plankton comes, the mobulas follow the plankton, and the orcas follow the mobulas.

Reality is more complicated.

Large aggregations of Mobula munkiana occur seasonally in the southern Gulf of California, and orcas in this region have been documented hunting mobulid rays. So there is clearly an ecological connection between orcas and a potential prey source that becomes extremely abundant at certain times. But we should not assume that every orca appearing in La Ventana is simply following the mobulas.

Orcas in the Gulf of California have an extraordinarily diverse diet.

And that is where the story becomes much more interesting.

What do orcas eat in the Gulf of California?

The Gulf of California has produced some extraordinary observations of orca predation.

Different individuals and groups have been documented hunting rays, sharks, whale sharks and ocean sunfish, among other prey. Research has documented orcas preying on Munk’s pygmy devil rays (Mobula munkiana) and other rays.

Other observations have documented interactions with bull sharks and blacktip sharks around Cabo Pulmo. A particularly remarkable series of observations documented orcas hunting whale sharks, the largest fish on Earth. Photo-identification showed that the adult male known as Moctezuma participated in three of four documented events, while females involved in another event had previously been seen with him.

Researchers suggested the possible existence of a group specializing in hunting elasmobranchs — sharks and rays.

And the story keeps developing.

Research published in 2026 documented 21 predatory interactions between orcas and ocean sunfish in the southwestern Gulf of California between 2013 and 2024, involving at least four distinguishable orca groups.

This is why I am cautious about saying:

“Baja’s orcas eat X.”

There is no single Baja orca diet.

Different groups and individuals may develop different hunting traditions.

Do orcas hunt mobula rays in Baja?

Yes. Orcas have been documented hunting mobulid rays in the Gulf of California.

This is particularly relevant to La Ventana because large aggregations of Mobula munkiana occur seasonally in the southern Sea of Cortez. But again, there is an important difference between saying:

“Orcas in the Gulf of California hunt mobulas.”

and:

“Orcas migrate to La Ventana every spring to follow the mobulas.”

The first is supported by observations. The second simplifies a much more complex ecology that we are still learning about.

Keep reading: Mobula Rays in Baja California: When, Where and Why They Aggregate

Are there resident orcas in Baja California Sur?

There is no confirmed resident population of orcas in the Gulf of California in the same sense that the term “resident” is used for some well-studied killer whale populations in the northeastern Pacific.

This is an important distinction because the word resident gets used very casually in wildlife tourism. It does not mean that the same animals never return.

It does not mean that the same animals never return.

What ecotype are the orcas in the Sea of Cortez?

We don’t have a simple answer yet.

In the northeastern Pacific, several well-studied orca ecotypes have been described, with different diets, social structures and behavior. A proposed Eastern Tropical Pacific type has also been described as having a relatively generalist diet. But the Gulf of California complicates that picture.

But the Gulf of California complicates that picture.

Some individually identified orcas here repeatedly hunt sharks and rays, including animals such as Moctezuma and individuals associated with him.

Researchers have therefore suggested that some Gulf of California orcas may show specialized elasmobranch-hunting behavior that does not fit neatly into the simplified categories people often use for orcas elsewhere.

For me, this is one of the most exciting things about seeing them here.

We are watching animals whose ecology is still being described.

What are your chances of seeing orcas in La Ventana?

This is probably the question people ask me most.

SEE HOW WE EXPLORE THE SEA OF CORTEZ

Are orca sightings guaranteed?

Never.

And I would be extremely cautious with anyone selling a wild orca encounter as guaranteed.

The problem is not only honesty.

Guaranteeing a highly mobile predator creates an incentive to find that animal at any cost.

La Ventana has already experienced what happens when wildlife tourism grows faster than regulation: large numbers of boats can converge on the same group and put pressure on animals that may be travelling, feeding, socializing or resting.

For me, returning to the beach without seeing an orca is always preferable to getting the encounter by chasing one.

The day they found us

It was the second-to-last day of the expedition.

We had spent four days looking for orcas without success. That morning, we changed the plan. No searching. Just enjoy the mobulas, which were spectacular that year. We were drifting with the engine off, eating something in the panga after a couple of sessions in the water.

Erik was the first person to stand up. He didn’t say anything. He just pointed behind the boat. A blow. Then another.

A tall, straight dorsal fin — a male — followed by three smaller fins. They weren’t simply passing in the distance. They were coming towards us. They moved slowly around the panga.

One female came close enough that we watched her roll slightly onto her side. Erik spent time observing the group. They were calm. Not hunting. Not moving quickly. Not behaving as though they were trying to get away from us. Only after observing them did we consider entering the water under the conditions applicable at the time.

What happened next lasted only a few minutes, but I remember it as if it lasted hours. They passed underneath us. They returned.

And one stopped for a moment a few metres away, almost vertical in the water. Looking at us. Then they disappeared into the blue. When we climbed back into the panga, nobody spoke. One of our guests took off her mask and had tears in her eyes. Another sat at the bow, covered his face with his hands and stayed there for a long time.

I wasn’t doing much better.

What does it feel like when an orca looks at you?

I am not going to pretend I can scientifically explain this.

I can only tell you what I have experienced — and what I have watched happen to other people. First comes adrenaline. You see the dorsal fin and everything becomes urgent.

You see the dorsal fin and everything becomes urgent.Then you put your face underwater.

And suddenly everything becomes quiet. When an orca passes close enough for you to see its eye, the experience changes. With many wild animals, you feel that they have seen you. With an orca, I often have the overwhelming feeling that I am being looked at deliberately. Maybe that is why these encounters affect people so deeply.

You are in the presence of an animal capable of moving away from you instantly. And sometimes it doesn’t. Sometimes it looks back. I don’t think that moment needs a neurological explanation to make it extraordinary.

Can you swim with orcas in Baja California Sur?

This is where the answer requires some care.

Mexico introduced its first formal management framework for observing and swimming with orcas around La Ventana in 2025.

SEMARNAT published a Plan de Manejo Tipo for the conservation and non-extractive use of Orcinus orca through observation and swimming in the La Ventana region.

The pilot season ran from August 1, 2025 to July 31, 2026 and established a designated area, authorization requirements for operators and detailed rules governing interactions.

What did the La Ventana Orca Management Plan regulate?

The 2025–2026 pilot represented an important change.

The principle behind the framework was important:

seeing an orca did not automatically mean you were allowed to enter the water.

The animals’ behavior and the situation around them mattered.

Can you scuba dive with orcas in La Ventana?

Under the 2025–2026 management framework, the activity was designed as surface swimming, not scuba diving.

It did not create a recreational scuba-diving activity with orcas.

Anyone considering an in-water encounter should check the current rules rather than assuming that regulations from the previous pilot season remain unchanged.

Is swimming with orcas in Mexico ethical?

This is probably the most important question in this article.

And I don’t think it deserves an easy yes or no. There are legitimate reasons for concern. Orcas need to hunt, travel, socialize and rest.

A wildlife encounter that repeatedly interrupts those behaviors can become a disturbance, regardless of how extraordinary the resulting photograph looks.

Tourism pressure around orcas in the Gulf of California has also become a scientific concern. Recent research on orca–sunfish interactions specifically highlighted the rapid growth of direct, previously unregulated interactions between people and marine megafauna in the region.

At the same time, regulation exists precisely because simply pretending tourism will disappear is unrealistic.

Well-designed wildlife tourism can support local communities, encourage data collection and create a constituency for conservation.

If getting someone into the water requires chasing the group, cutting across its direction of travel, surrounding it, repeatedly repositioning in front of it or interfering with feeding or resting behavior, I don’t want the encounter.

Sometimes the most responsible wildlife experience is the one you watch from the boat.

DISCOVER OUR MOBULA & CETACEANS OCEAN SAFARI

What is the water temperature in La Ventana?

Water temperatures change considerably across spring and summer, and local upwelling can create noticeable variation even over short periods.

For our expeditions, we treat temperature ranges as operational guidance rather than guarantees. In spring, we normally recommend approximately 3–5 mm of neoprene, depending on the month and how easily you get cold. A windproof layer for the panga is just as important. You may spend far more time on the boat searching than you spend in the water.

How we do it at Mind the Seas

We don’t sell “swim with orcas” trips.

We run ocean safaris in the Sea of Cortez during a period when some of the region’s most extraordinary marine wildlife events are taking place. Our central natural event is the spring aggregation of Mobula munkiana. We go to sea with Erik and other local experts and spend long days reading the ocean.

If orcas appear, we observe what they are doing. If current regulations allow an in-water interaction, the operator is properly authorized and the animals’ behavior makes that interaction appropriate, it may become part of the experience. If those conditions aren’t met, we stay on the boat.

No encounter is worth compromising the animal to get it..

My personal take

Orcas have taught me how to wait.

How to leave every morning without expectations.

How to come home in the evening grateful for whatever the ocean gave us.

And how to understand that the sea owes you absolutely nothing, no matter how far you have travelled to see it.

If you come to Baja hoping to encounter orcas, come for the Sea of Cortez, not for a checklist. Come for the mobulas. The dolphins. The long days in the panga. The sunrise from the villa. Cerralvo on the horizon.

And the possibility — never the promise — that somewhere during one of those days, a black dorsal fin will break the surface.

And if an orca decides to look back at you…

let it.

Scientific sources and further reading

Higuera-Rivas et al. — Research on orca predation on rays in the Gulf of California.
Important evidence documenting ray-hunting behavior among individually identified orcas in the region.

Ayres et al. — Orca (Orcinus orca) and shark predator-prey interactions within Cabo Pulmo National Park in the Gulf of California, Mexico. Frontiers in Marine Science (2024).
Documents interactions involving orcas, bull sharks and blacktip sharks and identifies individuals previously associated with elasmobranch predation.

Pancaldi et al. — Killer whales (Orcinus orca) hunt, kill and consume the largest fish on Earth, the whale shark (Rhincodon typus). Frontiers in Marine Science (2024).
Documents multiple whale-shark predation events and discusses the possibility of specialized elasmobranch-hunting orcas in the Gulf of California.

Rosales-Nanduca et al. — Orca and ocean sunfish: Predator-prey interactions and sightings in the Gulf of California, Mexico. Regional Studies in Marine Science (2026).
Documents 21 predatory interactions involving ocean sunfish and at least four distinct orca groups.

SEMARNAT — Plan de Manejo Tipo for Orcinus orca, La Ventana, Baja California Sur (2025).
The official Mexican management framework used for the 2025–2026 pilot season regulating observation and swimming with orcas around La Ventana.