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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Celebrating 50 years with 50% off sale
Orcas and Whale Sharks
This is a unique trip overlapping 2 seasons in July combining mobula rays / orcas / whale sharks with spotter airplane support. So, break out the good china, sign up for a trip, and join us for a very special 10 day / 9 night ultimate whale expedition this summer.
More 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
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Nautilus Belle Amie
Launched in 2015
147 feet long
Ultra-quiet
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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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One gray whale jumped five times!
We interacted with whales, saw many spy hops. One whale breached five times! We saw Tigresa, a whale that we have been seeing for weeks.
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School of hammerheads and a super friendly manta
The mantas were playful and friendly. Dolphins came along to play with the divers too! Lots of sharks! School of hammerheads.
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San Ignacio: A Sanctuary Protected by Its People
San Ignacio Lagoon is not just a sanctuary for grey whales—it’s a school for those who wish to protect them.
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Chavalo’s Lagoon
With patience and respect, he positions the boat carefully, always giving them space, never forcing an interaction.
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“A National Geographic-type experience.”
7 playful mantas, a pod of friendly dolphins, and humpback whales breaching. Diving at Socorro is amazing.
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The Heart of the Reserve: Where Whales and Birds Meet
San Ignacio Lagoon is not just home to whales—it is the beating heart of the Vizcaíno Biosphere Reserve, a place where life thrives in all its forms. Along the mangroves, snowy egrets and herons wade gracefully, their reflections dancing on the water. Brown pelicans skim the surface, while osprey circle above, scanning for fish. This […]
