Twenty years from now, you will be more disappointed by the things you didn’t do than those you did.
– Mark Twain
Socorro, Sea of Cortez, Mexico Sardine Run, Cocos Island, San Ignacio Lagoon
We do it all. If there are cool big animals, we want to share the experience with you. Our adventures combine the utmost safety, comfort and luxurious touches with excellence in guest experience. From orcas and mobula rays to super playful dolphins, great whales, 12 species of sharks, giant mantas, and so much more. We cover it all. The only question is which expedition to sign up for next!?
Featured Upcoming Adventures
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Early booking discount $*
Orcas fiesta
Don’t miss out on the most Orcas and interaction of the year. July and August can be crazy good for Orcas with 20 sightings July 2023 and with our spotter airplane, our “eyes in the sky”, we are hoping this summer will be even better. This our only liveaboard open boat of the year that includes diving Cabo Pulmo. And it’s prime time for Hammerhead Sharks and Sea Lions at Las Animas.
* Bookings prior to may 15, 2024More info -
Early booking discount $*
October Sea of Cortez 8 day / 7 night adventure
Loreto great circle. Best visibility and warmest water of the year. New trips posted because of heavy demand.
* Bookings prior to may 15, 2024More info -
Early booking discount Jan. trips
Gray whales of San Ignacio Lagoon
4 days / 3 night.
This is the most extraordinary whale interaction on the planet!
Fly-in. Glamping accommodationMore info -
Bait Ball Season
Dive Socorro Island in June
We love diving Socorro, especially in the spring and early summer. Socorro is always stunning, raw, and primal, offering fantastic diving experiences known for the super-friendly and interactive giant mantas.
More info
Your Home at sea
Our liveaboard diving ships were constructed with careful consideration. Relentless and obsessive attention to safety has been a cornerstone of our business from our very early days in the 1980’s.
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Nautilus Explorer
Canadian built
132 feet long
SOLAS safety certified
Tour Ship -
Nautilus Belle Amie
Launched in 2015
147 feet long
Ultra-quiet
Tour Ship -
Nautilus UnderSea
105 feet long
Full-width superstructure
Enclosed dive deck
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Nautilus Gallant Lady
116 feet long
6 large suites
1,700 horsepower
Tour Ship
We go above and beyond
Excellence in guest experience is all about you. Our focus is to ensure that you as our guest are safe and able to enjoy your vacation to the highest level.
Our values and culture
Safety First, Always
Our culture of relentless and obsessive attention to safety has been a cornerstone of our business from our early days operating in the 1980’s.
It’s all
about YOU
Our focus is to ensure that you as our guest are safe and able to enjoy your vacation to the highest level. A happy crew makes for a happy ship and the very best in guest experience.
The best of
the best
Our ships are crewed by teams of extremely hard-working men and women from around the world who love the ocean just as much as you do.
Blogs
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The Mantas!
Crazy day with tons of giant mantas that want to play! Loved the giant black one! For desert, got some hammerheads that came to visit! Ohaniniz
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Amazing second day!
The day started with a huge Manta and great visibility with large school of fish.. The day continued with Mantas visiting and finished with a few hammer heads and a Silky shark which was very curious and close…the crew pampered us with great food and special cookies, nothing else to ask for… Ilan
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I saw a shark!
Amazing crew does everything to help us feel comfortable and happy. They share information about the animals that we see, and everyday we are seeing new animals. Today I saw a shark! Andrea
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Many mobulas!
We start our first day of the trip in “El Saltito” with many mobulas! Ours guests get in the water with hundreds (maybe thousands) of mobulas. The best way to start our “Mobulass and Orcas” trip. Nikee
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Another good day at Revilla
Punta Tosca with mantas, dolphins hunting bonitas, yellow fin tunas and lots of juvenile sharks. The third dive was at El Acuario and we saw a Tiger shark!We had another good day at Revilla Pablo
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Hammerhead sharks! WOW!
This moment where you’re in the blue. And then, out of nowhere , you see it! the hammerhead. what a WOW moment!!! Leora gil
