Captains Noon Report – Belle Amie February 21, 2019 - - Belle Amie - lots of sharks and three mantas were around letting divers get close
    Captains Noon Report – Undersea February 21, 2019 - - Undersea - Chevrons Mantas, hammerheads, Galapagos, Silvers Tips and dolphins
    Captains Noon Report – Undersea February 20, 2019 - - Undersea - Galapagos, Dolphins, Silvertips, chevrons mantas, white tips, hammerheads, dusky sharks and one Whale
    Dolphins and mantas galore ! February 21, 2019 - - he last two days have been dolphins and mantas galore! In the last seven dives, we have been lucky enough to be joined by dolphins on four and mantas on four. Yesterday, we were joined by a group of nine dolphins on the first dive just after our group got into the water. They stayed and played for a little while, swimming in circles around us and coming within inches of us. After about 10 minutes they swam off, but we were not sad about the dolphins leaving for long as we were soon after joined by a manta.
    Smoothers seas ahead for the Gallant Lady February 15, 2019 - - We have both built and restored dive boats a number of times over the last 27 years. First there was the 50 foot Nautilus VI which we converted from a yacht. Then the 85 foot Nautilus VII, an old wooden WW2 sub chaser that had seen much better days but was all that we could afford! Following that, the Nautilus Explorer was our first brand new build and she is beautiful. The 102 year-old Nautilus Swell followed and while she was originally launched the same year as the Titanic (1912), the ship was in immaculate condition and well-loved by all. Our big, beautiful Nautilus Belle Amie was our next new build, followed by a massive renovation and stretching of the Undersea Hunter of Cocos Island fame.

    Captains Noon Report – Belle Amie February 21, 2019 - - Belle Amie - lots of sharks and three mantas were around letting divers get close
    Captains Noon Report – Undersea February 21, 2019 - - Undersea - Chevrons Mantas, hammerheads, Galapagos, Silvers Tips and dolphins
    Captains Noon Report – Undersea February 20, 2019 - - Undersea - Galapagos, Dolphins, Silvertips, chevrons mantas, white tips, hammerheads, dusky sharks and one Whale
    Dolphins and mantas galore ! February 21, 2019 - - he last two days have been dolphins and mantas galore! In the last seven dives, we have been lucky enough to be joined by dolphins on four and mantas on four. Yesterday, we were joined by a group of nine dolphins on the first dive just after our group got into the water. They stayed and played for a little while, swimming in circles around us and coming within inches of us. After about 10 minutes they swam off, but we were not sad about the dolphins leaving for long as we were soon after joined by a manta.
    Smoothers seas ahead for the Gallant Lady February 15, 2019 - - We have both built and restored dive boats a number of times over the last 27 years. First there was the 50 foot Nautilus VI which we converted from a yacht. Then the 85 foot Nautilus VII, an old wooden WW2 sub chaser that had seen much better days but was all that we could afford! Following that, the Nautilus Explorer was our first brand new build and she is beautiful. The 102 year-old Nautilus Swell followed and while she was originally launched the same year as the Titanic (1912), the ship was in immaculate condition and well-loved by all. Our big, beautiful Nautilus Belle Amie was our next new build, followed by a massive renovation and stretching of the Undersea Hunter of Cocos Island fame.

  • – Dave “Oly” Hjorten

    When I think back to the beginning of the Nautilus Explorer, and my many trips aboard, it seem that there is one constant – the best crews ever. This trip has been no different. The crew makes the trip, and they, too, have been the best. I’ve had the best time, and enjoyed everyone on board. What a great time we’ve all had. Fantastic diving, great meals, excellent company. Thank you!

  • – Doris Nuval

    Day 4 – Intimate encounters of the dolphin kind. Two minutes into our safety stop, an adult dolphin joins the group and makes the rounds, not just to say hello, but to ask to be hugged (at least that’s what Vivi, our buddy who claims to understand sonic sounds says) by every single one of us. It was difficult to resist the temptation to touch the animal, and some of us alas, succumbed to the temptation. He must have stayed with us for at least ten minutes while his gang waited for him. Before he rejoined them, our dolphin angel swam right up to DM A-Wei to say goodbye, and probably thank you. Flipper, it’s you we have to thank. Some kind of surreal experience you gave us.  

  • – Hilda T.

    I had two wishes for this trip. First, interact with dolphins. I’ve been diving many years but haven’t had the chance until today! At Roca Partida the welcoming committee was waiting for us – a dozen bottlenose dolphins! The other wish is to see the humpback whale underwater. Today my whales are doing a tease, just showing their tails and blows on the surface. The hammerheads got the memo though, two schools made a show. Roca Partida is so far my favorite dive site with the lushness of life. Schools of sharks, tunas, jacks, etc, and our angel of the deep – Manta Ray – showing up at every safety stop! PS – I’m impressed by the concern and the attention to safety by the entire crew of Nautilus UnderSea. Captain Vicente filed report on my vertigo and called DAN to make sure I’m well. Excellent customer service. Triple thumbs up!  

  • – Mel, Canada

    This remote diving has given us some of the most magical creatures in the world that few are lucky to experience. From pods of dolphins, including a mama with her baby, to 200+ hammerheads swimming in unison, to a whole menagerie of sharks. But the prize has certainly been the mantas. When you look deep into a manta’s eyes you truly feel like you have seen into her soul and this happened on multiple occasions. They crave human interaction unlike anything I have ever experienced. Ivan and Sten, our incredible dive masters, have made us feel prepared, safe, and even regaled us with some hilarious stories. Osa, our host, and Chef Felipe worked tirelessly to ensure that all our needs were met. Happy Hour was a big hit and Osa’s mojitos were amazing! Thank you to the entire crew for all of your hard work in making this the trip of a lifetime. How do we go back to regular life after this?

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.

Meet the Explorer
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.

Meet the Belle Amie
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.

Meet the UnderSea
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.

Meet the Gallant Lady

Real-time Ship Locator

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Latest Blog Posts

_BTO3084(1)
2019-02-21

Dolphins and mantas galore !

he last two days have been dolphins and mantas galore! In the last seven dives, we have been lucky enough to be joined by dolphins on four and mantas on four. Yesterday, we were joined by a group of nine dolphins on the first dive just after our group got into the water. They stayed and played for a little while, swimming in circles around us and coming within inches of us. After about 10 minutes they swam off, but we were not sad about the dolphins leaving for long as we were soon after joined by a manta.

MKH-09255(1)
2019-02-13

False killer whales spotted at Roca Partida

We of course had fantastic dives with plenty of sharks , including large Galapagos, Silvertips and Scalloped Hammerheads as well as several Manta sightings throughout the day. There were also the giant “bait balls” of Bonito Tuna and huge schools of various sized Yellowfin Tuna aswell. Pretty good going to be fair.
However when you couple this with the several Humpback whales in the area breaching and playing around all day it gets a bit more special. We could even hear the Humpbacks singing on a couple of the dives it was absolutely beautiful.

aquqrium
2019-02-10

Socorro aquarium

It’s already the last day of diving in this great trip to Revillagigedo and we are finishing with one of the best days at The Boiler I have ever had. As we start to get busy at San Benedicto island some dolphins are jumping around the Explorer entertaining our guests having breakfast.

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