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

    Noon Report – Nautilus Belle Amie May 26, 2018 - - Nautilus Belle Amie - The dives have been good, Tiger shark, mantas, hammerehad sharks, galapagos and silky sharks have been in the menu for the day.
    Noon Report – Nautilus Explorer May 26, 2018 - - Nautilus Explorer - Two mantas were coming around and one of them stayed for the entire dive with the guests.
    Captains Noon Report – Explorer May 25, 2018 - - Explorer - There is a little new born dolphin that stays close to the mother
    Looking into the manta’s eye May 26, 2018 - - The moment that my bubbles had cleared from my entering the water I realized that I was looking into the tennis ball sized eye of a 4.5-meter Giant Manta. We hung there together motionless, studying each other. I swear that the deeper you look into a manta’s eye the deeper it looks into your soul.
    A chevron manta WOW moment! May 25, 2018 - - Our big WOW MOMENT was swimming with a 12ft Chevron Manta, taking pictures and being in complete awe of her(?) when suddenly a whale shark appeared out of the blue. A juvenile everyone said. We all got a chuckle of how the manta reacted when the whale shark came in.

Our Values – Our Culture

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 >

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 luxurious, stabilized, ISM safety certified ships

Nautilus Explorer

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

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 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

scuba diver angles camera down to watch manta ray pass

Looking into the manta’s eye

The moment that my bubbles had cleared from my entering the water I realized that I was looking into the tennis ball sized eye of a 4.5-meter Giant Manta. We hung there together motionless, studying each other. I swear that the deeper you look into a manta’s eye the deeper it looks into your soul.

manta ray mid flip over a stream of bubbles

A chevron manta WOW moment!

Our big WOW MOMENT was swimming with a 12ft Chevron Manta, taking pictures and being in complete awe of her(?) when suddenly a whale shark appeared out of the blue. A juvenile everyone said. We all got a chuckle of how the manta reacted when the whale shark came in.

giant manta being cleaned by several clarion angelfish

Dem besten Manta Platz!

Daher hatten wir die moeglichkeit 2 ganze Tage am Tauchspot “Boiler” zu verbringen; dem besten Manta Platz! An beiden Tagen waren am Vormittag sogar Delfine dabei, man wusste gar nicht wo man hinschauen sollte.