Captain’s Noon Report – Explorer December 13, 2018 - - Divers reported 3 friendly mantas, and numerous dolphins crashing the dive sight and playing with the divers. One group sighted a large school of hammerheads near cleaning station in the blue, reported to have possibly 100 sharks in the school!
    Captains Noon Report – Explorer December 11, 2018 - - Explorer - everything." which she came to elaborate as Mantas, all types of sharks including the hammerheads, and she was particularly impressed with the numerous large yellowfin tuna
    Captains Noon Report – Explorer December 10, 2018 - - Explorer - A large pod of false killer whales also crashed the dive site
    Mantas, Hammerheads, Whales, Dolphins and Tiger Sharks Stun at Socorro December 12, 2018 - - Throughout the last few days everyone on board has seen manta rays, schools of Hammerheads, Silky sharks, Galapagos sharks, silvertip sharks, tons of white tips and most have seen a tiger shark or two also!
    Guests Enjoy Giant Mantas and Greek Night! December 10, 2018 - - I can't believe the wildlife we saw: mantas on nearly every dive, hammerheads, schools of jack, and more whitetips than I know I'll ever see again.

    Captain’s Noon Report – Explorer December 13, 2018 - - Divers reported 3 friendly mantas, and numerous dolphins crashing the dive sight and playing with the divers. One group sighted a large school of hammerheads near cleaning station in the blue, reported to have possibly 100 sharks in the school!
    Captains Noon Report – Explorer December 11, 2018 - - Explorer - everything." which she came to elaborate as Mantas, all types of sharks including the hammerheads, and she was particularly impressed with the numerous large yellowfin tuna
    Captains Noon Report – Explorer December 10, 2018 - - Explorer - A large pod of false killer whales also crashed the dive site
    Mantas, Hammerheads, Whales, Dolphins and Tiger Sharks Stun at Socorro December 12, 2018 - - Throughout the last few days everyone on board has seen manta rays, schools of Hammerheads, Silky sharks, Galapagos sharks, silvertip sharks, tons of white tips and most have seen a tiger shark or two also!
    Guests Enjoy Giant Mantas and Greek Night! December 10, 2018 - - I can't believe the wildlife we saw: mantas on nearly every dive, hammerheads, schools of jack, and more whitetips than I know I'll ever see again.

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 4 stabilized, ISM safety certified ships

Nautilus Explorer 2018
Nautilus Explorer

Canadian shipyard built from the keel up with a thoughtful design intended to support operations from the chilly current swept waters of Alaska to the equatorial heat of Clipperton Island. Recently lengthened to 132 ft, the Explorer was the world’s first SOLAS safety certified dive boat.

Nautilus Belle Amie 2018
Nautilus Belle Amie

The “Belle” is our newest ship, launched in 2015. At 147 feet she is a big, beautiful and very popular liveaboard that is more like a small ship than a dive boat. Guests enjoy ultra-quiet rooms, spaciousness and comfortable, stabilized crossings.

Nautilus Under Sea Liveaboard Diving Ship
Nautilus UnderSea

Formerly the Undersea Hunter of Cocos Island and IMAX fame, the Nautilus UnderSea is one of the most beloved live aboard dive boats in the world. With a new full-width superstructure, enclosed dive deck and lengthened to 105 ft, the UnderSea is perfect for smaller groups of just 19 divers.

Nautilus Gallant Lady near shoreline
Nautilus Gallant Lady

Our new Gallant Lady is beautiful and combines the luxury of a Broward yacht with thoughtful liveaboard dive boat design. This 116 foot yacht features 6 large suites, accommodating 12 guests, and 1700 horsepower along with hydraulic stabilizers, speeding you wherever you want to go.

Real-time Ship Locator

Latest Blog Posts

A beautiful manta soars at Socorro. Photo by Sharon & Rudolf Zuian

Mantas, Hammerheads, Whales, Dolphins and Tiger Sharks Stun at Socorro

Throughout the last few days everyone on board has seen manta rays, schools of Hammerheads, Silky sharks, Galapagos sharks, silvertip sharks, tons of white tips and most have seen a tiger shark or two also!

Dancing dolphins at Socorro. Photo by Sandra Haessler

Guests Enjoy Giant Mantas and Greek Night!

I can’t believe the wildlife we saw: mantas on nearly every dive, hammerheads, schools of jack, and more whitetips than I know I’ll ever see again.

A giant manta poses in the blue. Photo by Andreas Marohn

An Explosion of Marine Life at the Socorro Islands

All groups enjoyed several mantas, a school of about fifty hammerheads came out of the blue into The Canyon, and as usual the cleaning station did not disappoint with a parade of mantas, dolphins, juvenile silvertips and Galapagos all at once.