Explorer was atRoca Partida

Water Temp75℉/24℃

Visibility100ft/30m

# of divesYesterday: 3

Belle Amie was atEl Canyon

Water Temp76℉/24℃

Visibility80ft/24m

# of divesYesterday: 4

Undersea was atThe Boiler

Water Temp76℉/24℃

Visibility70ft/21m

# of divesYesterday: 4

    Captains Noon Report – Belle Amie June 20, 2018 - - Belle Amie - Underway to San Benedicto Island N 20 59.6 W 110 20.8. Partly cloudy skies, NW Wind 10-12 knots Seas NW 3-5'. Smooth ride south. All is well onboard.
    NEW AMAZING Captains Noon Report – Explorer June 18, 2018 - - Explorer - It's good to be back at the Boiler!!!. We hit some current along the crossing and we had a later morning ETA into San Benedicto. There is an eerie sense of the weather. Overcast skies with a warm breeze mixed with colder air are a left over reminder of the storms that came through. The water is blue and the first dive back was well worth the wait
    Captains Noon Report – UnderSea June 18, 2018 - - UnderSea - Had good dives at La Reina yesterday, then we start our way to San Benedicto. It was a beautiful crossing heading out of the sea of cortez
    Magnificent Mobulas and More at Isla Tortuga June 21, 2018 - - What really made the dives special was the Mobula rays. On every dive we did here (5 total), we saw Mobula and I don't mean one or two. I mean many, and the action was constant for the whole of our dives sometimes.
    Playful Sea Lions on Isla San Pedro Martir June 20, 2018 - - When we finished our dive the sea lions came up beside the zodiac and started jumping around as if to say "Where are you all going, we want to play with you!"

Our Values – Our Culture

Nautilus boats are built for Safety
Built for Safety

Most divers would be shocked if they knew what was going on in the engine room and below decks of many liveaboard diving ships. Safety is not something to ever take lightly. We live and breathe safety with obsessive compliance to our Safety Management System under the watchful eyes of our external auditors. See our passenger and safety certificates here.

Our commitment to safety >

Luxurious Liveaboard Diving
Excellence in Guest Experience

Captain Mike has led the way for the last twenty-seven years in consistent and relentless obsessive attention to detail, and making every trip as excellent as possible. That attention to detail shows up everywhere, from each dive briefing, to the choice of dive sites, to dinner service, to the quality and thread count of our Egyptian cotton bed sheets. We never stop stressing over the details. We never stop trying to do even better.

Our guest experience >

Hostess Marcella pours drinks at the bar
Happy Crew, Happy Ship

A happy crew makes for a happy ship and the very best in guest experience. The men and women on our ships come from around the world and share your passion for Mother Ocean. Every one of our seventy crew and thirty-five shoreside support staff in Mexico and Canada are committed to doing the best they can for you, our guests, and that shines through like a bright beacon of happiness.

Meet our crew >

Choose from 3 stabilized, ISM safety certified ships

Nautilus Explorer Liveaboard Diving Boat
Nautilus Explorer

We custom built our beautiful Nautilus Explorer in 2000 with a laser focus on safety, comfort and the perfect liveaboard diving boat configuration. Our guests enjoy stabilized crossings on the #1 boat that clients ask for.

NAUTILUS BELLE-AMIE Liveaboard Dive Boat
Nautilus Belle Amie

Our Nautilus Belle Amie is a new build launched in 2015. This is the largest liveaboard diving ship in our fleet and dwarfs her competition. Guests enjoy the ultra quiet rooms, extreme spaciousness and comfortable, stabilized crossing.

Nautilus Under Sea Liveaboard Diving Ship
Nautilus Undersea

Formerly known as the Undersea Hunter of Cocos Island fame, our Nautilus UnderSea is one of the most beloved liveaboard diving boats in the world. After renovations in 2016, the UnderSea gained a full-width superstructure and more!

Latest Blog Posts

Tropical Fish in the Sea of Cortez

Magnificent Mobulas and More at Isla Tortuga

What really made the dives special was the Mobula rays. On every dive we did here (5 total), we saw Mobula and I don’t mean one or two. I mean many, and the action was constant for the whole of our dives sometimes.

Playful Sea Lions in the Sea of Cortez

Playful Sea Lions on Isla San Pedro Martir

When we finished our dive the sea lions came up beside the zodiac and started jumping around as if to say “Where are you all going, we want to play with you!”

Colorful Lobster in the Sea of Cortez

Happy Guests in the Sea of Cortez

The crew have gone beyond expectation to deliver a variety of safe diving sites. Each day so far has delivered spectacular scenery above and below the sea.