(48 customer reviews)


Nemo is a compact dive system that supports 1 diver to 10 feet with a rechargeable battery pack that lasts over an hour.

Fully assembled in the United States of America.

Whether you’re an ocean explorer, poolside parent, treasure hunter, underwater photographer, self-sufficient boat owner, or in search of the latest yacht toy – Nemo is for you. 


SKU: NEMO-BO-BL-2EX-BKCOT Categories: , , Tags: ,


Watch to find out how Michael Oliver enjoys using Nemo on his treasure hunting adventures

About Nemo

Nemo is a compact dive system that supports 1 diver to 10 feet with a rechargeable battery pack that lasts over an hour. Air is drawn from the surface above the water and pumped through the air hose to deliver clean breathing air to a diver up to 10 feet deep.

Nemo’s custom-designed compressor is fully sealed and built to interact with saltwater. Patent pending Smart Reg™ technology enables Nemo to be the world’s smallest dive system and weigh in at only about 10 pounds.

Battery Powered

Nemo’s lithium ion battery weighs about 1.3 pounds and can be easily swapped for an additional 60+ minutes of run time. Recharge time is 3 hours or less. The battery capacity is less than 100 Wh (watt-hours) so it can be brought onto an airplane in carry-on luggage.

Patent Pending Smart Reg™

Nemo’s Smart Reg is patent pending and unlike any other diving regulator on the market, and it is what enables Nemo to be more portable and energy efficient than any other dive system on the market. Inside of the Smart Reg, a waterproofed sensor detects when a diver inhales and it then sends an electronic signal which triggers the compressor to pump air at exactly the time and speed that the diver is inhaling.

Nemo pumps only the exact pressure, volume, and flow rate that the diver needs at their particular depth which means it uses just a fraction of the energy of any other underwater breathing system.

Nemo Online Dive Training Course

Learn about diving techniques before Nemo Diving by taking the Nemo Online Dive Training Course, available for free to anyone at any time at This course was specifically designed for Nemo Diving with the help of experts in the field of diving. It is required that all users complete the course with a passing score prior to Nemo Diving.

Dive Flags

Dive flags are used to signal that a diver is underwater. The Red and White flag is used in the United States, Canada, and some other countries. The Alpha flag is used in most other countries around the world.

Always check the dive flag regulations for where you’ll be Nemo Diving and make sure to install the proper flag style so that boating traffic will steer clear while you are underwater. If you travel, you may find it useful to have one of each – choose “Both Dive Flags” from the drop down menu above!

Flotation Tube

Nemo has enough buoyancy to float in the water without clipping on the flotation tube for times when you are diving in the pool or other enclosed body of water. But whenever waves or boating traffic are present in your diving location then the flotation tube should be installed to provide Nemo not only 22 lb of additional buoyancy but also superb visibility.

The flotation tube easily inflates and deflates so that it packs away nice and small. Inflates by oral inflation. To attach the flotation tube, simply slide it onto Nemo from the top and clip the corresponding buckles together.

Heads Up!

Please have a look at our dealer map here for shops near you that might have Nemo in stock.

Nemo Backpack

Padded back support and shoulder straps for extreme comfort. Storage compartments inside are designed to organize your air hose, batteries and chargers, flotation tube, dive flag, and weight belt. There’s also a zip pocket for miscellaneous items like your phone and wallet and straps on the side to carry your fins.

OTS Spectrum Full Face Mask

The OTS Spectrum is a Full Face Mask that can be used with Nemo to eliminate the bite down mouthpiece of the Nemo Smart Reg. The Spectrum adapts to the Smart Reg by inserting the Smart Reg into the Spectrum and securing with a zip tie. With the Spectrum, users can breathe through their mouth or nose, with no need to bite down on the mouthpiece. The mask seals around the user’s face for extreme comfort and warmth.

Other benefits of the Spectrum Full Face Mask: no jaw fatigue, no dry mouth, double seal for a better fit, five point head harness and the option for communications systems. Add on the Spectrum GoPro Mount if you have a GoPro you’ll use to film your dives with Nemo.

Who can participate in Nemo Diving?

WARNING: Nemo uses strong magnets. Magnets may interfere with pacemakers or medical implants. It is advised that persons with pacemakers or medical implants do not use Nemo. Persons with pacemakers or medical implants must stay back at least 2 feet from the Nemo main body at all times.

Prior to Nemo Diving, ALL Users must:

  1. Read and understand the Nemo Owner’s – Users Manual
  2. Complete the Nemo Fitness to Dive Evaluation
  3. Complete the Nemo Online Dive Training Course

All Users must be able to:

  1. Swim 200 yards without stopping, without a time limit
  2. Tread water for 10 minutes continuously

Age Limits:

  1. Users must be 8 years of age or older to Nemo dive, but are restricted to diving in a swimming pool only, in water shallow enough so that they can stand with their head above the surface of the water.
  2. Users must be 10 years of age or older to dive outside of the pool.
  3. Users under the age of 18 must have parental or guardian supervision at all times.

Limited Warranty

Nemo comes with a One Year Limited Warranty. Click the link to read more.


To register your Nemo, schedule service, for help with troubleshooting, or to order replacement parts, you can always visit or email us at We are here to help!

Nemo Accessories

On this page you can select your extra batteries. You may need some more gear for your Nemo Diving kit.

Here’s a few additional items that are useful for Nemo Diving. Make sure to always check back here for fun, new accessories!

Here’s a few additional items that are useful for Nemo Diving. Make sure to always check back here for fun, new accessories!

Additional information

Weight 20 lbs
Dimensions 19 × 13 × 9 in

No Spare Battery, One Spare Battery, Two Spare Batteries

48 reviews for Nemo

  1. Michael Oliver

    G,day BLU3 ?
    I’ve used a variety of hookah systems and have to say NEMO has been Alot of fun due to its light weight compact travel friendly design and almost silent system allows me to take NEMO anywhere. NEMO has already helped me reunite 3 people with their lost wedding rings. Your welcome to see me diving with NEMO on my YouTube channel: Michael Oliver. Overall I’m happy with my purchase and gave 4 stars, I’ll give 5 stars for a 10 metre hookah I hope to see BLU3 Roll out in the future. See you on the next hunt

  2. david goldhill

    I bought NEMO so I could dive under my boat in the Mediterranean. I had SCUBA kit but found it difficult to get bottles refilled. Then my air cylinder needed to be pressure tested and that proved almost impossible. NEMO is the perfect solution for me. I only need to dive to 2 metres to clean the hull and change anodes. So far I have only used NEMO in a swimming pool. I am looking forward to using it later this year when I take it out to my boat in Greece.

  3. Michael Limosani

    I originally purchased my nemo dive device during their kickstarter campaign. Since the beginning I have been more than impressed with the company and their team. They had consistently kept backers updated about their product and once it came time to ship boy did Nemo impress. The device far exceeded my expectations, and worked better than I expected. The nemo device is simple to use, with dive times lasting well over an hour. I am very thankful I purchased their buddy pack as it has been extremely fun to dive with friends. These devices are very compact, lightweight, and easy to travel with. I fit both of mine in a carry on bag and transported them on the plane with ease. My first few dives with Nemo absolutely blew my expectations out of the water. I cannot wait to see what team Blu3 has instore in the future. After diving with Nemo vacationing will never be same so many endless possibilities. I cannot wait to share my experience with friends and family in the coming summer months. I highly recommend the nemo device if you are interested in learning to dive or already enjoy diving.

  4. Justin Lammers

    Blu3 Nemo has been incredibly valuable in search and recovery of aquatic treasure & lost items. My friends and I have Blu3 Nemos that we use for uncovering prehistoric fossils in central florida. We have found Mammoth bones and Megalodon Shark teeth thanks to Nemo. Nemo is way easier to use than tank based scuba gear and much lighter weight. That has prove very useful in remote areas where we dive. What I love about Nemo is I’m not being dependent on dive shops to fill tanks. Battery lasts at least an hour in my tests even with some newer divers. I simply can charge my batteries at home and go out diving whenever I want! The unit is so compact I even can carry it in kayaks and paddle boards. Excellent rig for Lobstering in the Florida Keys or Bahamas. Also a great rig for teaching kids diving skill basics in the pool. I like that the pump can only be turned on/off by the diver. This unit was designed with safety and quality in mind & it shows. Excellent product for the money and will likely buy more from this company.

  5. John bloom

    Nemo has been a hit with me, my family and all who have tried it so far. I bought several units to try for a family vacation. This summer. We have so far taken then to a 12′ indoor pool. The aquatics director tried it and loved it, we brought a freind who has never been to the ocean, or snorkled or scuba’d. He watch the very well designed training and we then hooked him up. He jumped in a stayed under for over 40 minutes in one session, playing with my kids. I am a big guy and blow thru a tank scuba diving in 25min. I was able to swim at the bottom of the pool ( with weights) for an hour chasing after coins and pool dive toys with my kids and freind. My wife likes the carry bags, as it holds battery, mask, weight belt, camera, dive socks, suntan lotion ,and you have cool outside straps for fins. We found we can pack two nemos and stuff in 1 x carry on so now we have 1 set aside as as our go bag for trips. We are awaiting to go to the caymans to explore the ocean. Oh btw they are quiet in a pool. With every one else talking and outside noise, the little back ground sound from each unit is not noticed. I just recently took to outdoor pool at out condo in fl with a bunch of seniors. No one complained about noise, and all want to borrow the 2 units I am now keeping in my condo for their kids to play with.

  6. Joseph Waltenbaugh

    I have only used the NEMO in the swimming pool at the YMCA to familiarize myself with it, and it functions perfectly. I then booked a vacation to St. Thomas/St. John, specifically to use the NEMO for shallow water reef diving, but I never made it there. Tornados and a severe weather system shut down the southeast US, stranding me in the Charlotte airport. As it turned out, they couldn’t get me to St. Thomas, and they turned around and flew me back to Pittsburgh. I didn’t get to dive with the NEMO, but I had a lot of experience carrying the unit around the airport for 14 hours. As such, I can offer some advice about traveling with it.
    Rather than lug it around in its backpack (after 14 hours, it would have become a load), I purchased an iFLY 18-inch Upright – Fibertech Kids suitcase from Walmart ( It makes the perfect travel case for the NEMO. The unit fits snuggly into it, and the case is small enough to fit under the seat of your standard airline seat. With the wheels and the telescoping handle, it’s perfect for air travel. I keep the inflatable ring, charging cord, and my neoprene weight belt (without the weights) in the storage side of the case. The snorkel is a little too long to fit, so I pack that in my larger checked suitcase along with the weights, mask, fins, and NEMO backpack. (I’ll use the backpack when transporting the unit to the dive site.)
    To secure the unit inside the suitcase so it doesn’t slide around, and so you can sit the case on any side without the unit moving around inside, I installed a web strap with a clip that I pass around the metal tubes lining one side of the suitcase, the tubes through which the retractable handle slides. Using this strap, I can securely fix the unit inside the case, tying it to the metal tubes. (Installing the strap requires cutting two slits in the lining. I applied duct tape to the lining first before cutting the slits to keep the material from fraying.) I also inserted a small piece of foam padding at the end where the NEMO rests against the suitcase and on the other end to keep it from sliding forward. The harness, regulator, and air hose, I coil inside the suitcase beside the unit.
    Since the lithium battery is installed in the unit, you could put the NEMO in your checked bag (or check this small kid-sized bag), but the TSA is going to open the bag and take a look at the unit. They will also pull it out and inspect it, swabbing it for explosive residue. I prefer to be there with them when they do this so I can be sure it is strapped in properly when they are finished; therefore, I take it as a carry-on through the TSA checkpoint. It didn’t take them long to do their inspection, and I even alerted them about it when I placed it on the belt. Regardless of whether you say anything or not, they are going to open the bag once it passes through the X-ray machine because, let’s face it, it looks like a bomb in the suitcase! After you get it through the TSA checkpoint, you can always gate-check it if you don’t want to carry it. They forced me to gate-check it on my return flight to Pittsburgh, even though it is tiny and fits under the seat, but I was too tired to argue with them after 14 hours in the airport. I also feel better carrying the unit with me rather than trusting the airline people to be gentle with it as a checked bag. After all, it needs to be functioning properly to deliver air to me when I’m submerged.
    I’ll be taking a cruise in April that will stop in Grand Cayman and Cozumel, so I will get to use the NEMO at Eden Rock and Devil’s Grotto on Cayman and another spot I’m familiar with in Cozumel.
    I’ve posted pictures of the NEMO inside the suitcase at

  7. Joshua Dent

    The Nemo is absolutely amazing! I’ve been looking at dive hookah systems for a while now. The gas powered options are expensive and bulky and other battery powered models I’ve looked at have some other draw backs. The Nemo checks all the boxes for me and I’m very impressed with this little system. I use mine for metal detecting in the deep trough at my local beaches. I wasn’t sure if 10′ feet was really going to be deep enough to get down to the bottom but, it was even at high tide. Talk about looks at the beach, people that have never seen anything like this watch in wonder as Nemo floats by. Only to be surprised as I surface to get my barring before diving back down. So what’s it like using Nemo? On the inhale you can hear Nemo’s compressor run. It sounds like a little machine gun or maybe the government printing press printing out those stimulus checks…brrrrrrrrr. While inhaling you can feel the air supply having a pulsation feeling as the compressor runs. The stated battery run time from my experience is not limited to 1 hour. I was getting 1 hour 45 minutes on a single battery. From my understanding a scuba tank lasts about 1 hour and a little longer if you control your breathing in comparison. Nemo bridges the gap between snorkeling and scuba. Now that I’ve used my Nemo would I buy it again if I had to do it all over again? Yes, I would and I’m going to be buying my wife one in the near future as well.

  8. John Erick Battie

    The Nemo is fantastic. Not usually commented on in reviews, but the training course and videos are very thorough and excellent. Over 40 years ago I was teaching similar material in scuba classes. Use. When you first adjust the straps it feels a bit restrictive but in the water it is perfect. I would recommend the straps be a bit longer. As I am a big guy they were almost too small. When you first try it out you feel the pump supply the air with a brrrrrrrrr sound. But you get used to that quickly and in the marina it is not noticeable at all with all the other sounds around. The air supply is very smooth and enjoyable. I used Nemo when I was cleaning the propeller on my sail boat. I bought Nemo basically for that purpose, instead of gearing up with scuba to clean the propeller off of barnacles and mussels. It surpassed my expectations. I will get the protective cover as I can see a need for it after my first outing with Nemo cleaning the propeller. What a great device. It has been a while since I have been this excited about anything I’ve bought. My wife was impressed with my comments. The battery lasts longer than I expected based the rated time limit. As one of the other reviewer commented, after one use I would definitely buy it again. And I am considering a second for my wife and son. By the way I am 66.

  9. Ted VanCleave

    I took my Nemo out yesterday for the first time. I love it! I just did a shallow easy dive to get familiar with the gear. It worked great. Tons of fun. Handled well. No issues. Your online class is important and very well done. I highly recommend Nemo and I’m looking forward to getting back in the water this weekend! Thx Blu3, you’ve made diving fun again!

  10. Sharee Rask

    Did my first dive with Nemo this weekend. So far so good. I stayed in a small swimming hole so I could figure out how much weight I needed while wearing my dry suit, wet suit and swim suit. The Nemo seems well thought out and easy to use. Blu3 does an awesome job taking you through an online training course to prepare any level user. The only change I would like to see is the ability to go 15 to 20 feet to fit my needs better. Thanks Blu3.

  11. Arash Repac

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    Purchased two units, one of them arrived broken. The other one had bad wire connection, so water got in! Took pictures and videos of everything :-((( Then I saw a Divebuddy, which is better in every sense! All parts are better quality! Only 2 things that are better on Blu3, is the promotional videos and the nice design of the device. Customer service reacted immediately to my complaint, so let’s see the outcome. Sorry for this negative post, but I truly believe that with few upgrades, Blu3 can be a truly amazing device (just look at a Divebuddy, all the right clues are there!). Until then, I’d not recommend buying a Blu3.

  12. Sharee

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    First dive went awesome stayed in a small swimming hole and adjusted wet weight belt for different wet/dry suits. The Nemo seems nicely thought out and built well. The online training that was procured covered everything you need to know to use Nemo safely. The only thing I would have liked to see is a 15 to 20 foot dive depth to meet my needs better. Will definitely recommend to others. Thanks Blu3.

  13. jaouad makhlouf

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  14. Allen Hogue

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    Everything worked great, my only complaint is for them to educate the purchaser that when you order two batteries that the for some reason the chargers are married to a single battery and that you cant charge multiple batteries with one charger. First time I took it out i could only use one battery as the charger would only charge one and not the other. Other than that had a great time and would recommend to others.

  15. Susan Hofstra

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    I love thats it so compact and I can pretty much take it anywhere.


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  17. Terry

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    Love the weight and portability

  18. Trinkl Florian

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    Very useful and a lot of fun

  19. James Burrell

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    Fantastic product, very helpful and dedicated team. Thanks

  20. Bruno Bellanger

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  21. David S.

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    This thing is awesome!! Very simple & light weight. Perfect for my application ?

  22. Robert Meyers

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    Love it; works great

  23. Richard S.

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  24. Christopher Wenner

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    I’m amazed at how easy it is to breath under water.great technology I don’t feel any pull from the hose even when I’m taking video through weeds at the lake.every time I’m out useing the Blu I get alot of interest.i could probably sell alot of these.very satisfied thanks so order was here the following week.

  25. Michael Doyle

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    Fabulous product! Thanks for the great experience!

  26. Jan Harzem

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    Easy to use and very compact

  27. Richard Muller

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    Good but no warning when the batteries die so no battery no air.

  28. Craig Johnson

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    Absolutely an incredible invention. I have not had quite enough experience yet to honestly evaluate it, but I wish I owned the patient.

  29. Gary Heckman

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    I tried my Nemo out last evening for the first time. Every breath i took It made a TERRIBLE vibriating noise . Is this common in all the nemos ?

    Gary Heckman

  30. Jody Vining

    As someone who has used various surface supplied air systems over the decades – this thing blew me away.

    The compact, portable size makes all the difference. Not having it take up half the boat is a big deal, and opens the door to more frequent and more spontaneous dives with the rig. Also – the noise –
    Or lack thereof – is amazing. I’m not missing the sound of that gas engine whirring away constantly.

    Overall this thing is a huge win. They did an incredible job on the design. It’s obvious tons of thought went in to this product and I couldn’t be happier.

  31. David Cosby

    I love it! I thought that the battery would only hold a charge for an hour, but so far my record has been 1 hour and 48 minutes working under the boat and it was still pumping out plenty of air. Now I can clean the bottom of the boat in 1/5 of the time that it used to take.

  32. Robert

    I am a diver that dives every day. I am mostly in marina’s and canals finding phones, wallets, keys, boat parts, glasses and anything else folks lose in the water and I retrieve them. I have a Shock Alert and underwater metal detectors and this system is awesome for a 5 minute dive to grab something in the muck. I am 63 and my tanks are getting heavy to lug around. I love this light system and it has really helped me out. I am #scubadetector on Facebook.

  33. Welsh Tucker

    This device is pretty awesome. I bought since I frequently do shore dives and although the hose is 10ft, it’s more than you would expect. First time taking it out, there were 2-3 ft waves and the device seemed to hold up perfectly. I took it out for 45min and still had 1/3 battery remaining! Nemo is also very light weight and is as easy as carrying a beach chair. Customer service has also been excellent and they respond quickly. Overall I am very happy with my purchase and this product is super innovative and costs less than an iPhone. Check out my Instagram as I will also be adding more underwater videos using the Blu3 Nemo: @welshtucker

  34. Anonymous

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    Works as advertised super convincing and easy to use. Highly recommend price could be lower but I understand this in new tech so you have to pay.

  35. Francesc josep Garcia broceño

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  36. L.T. Graaf van de

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    Zoals ik het zag op YouTube, prachtig apparaat, wat ik bestelde is ook geleverd en binnen een zeer korte tijd.
    Ik ben er blij mee, en maak ook reclame hier voor.

  37. Travis Manabe

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    Super awesome product. Only one thing i had to work loose was the connector to the battery on the unit itself. Ran into my shipment being lost and contacted Nemo and i got my product in 3 days. I have to thank David for that awesome customer service.
    I would recommend this product to anyone that wants to have the best hooka dive system out there!

    Thank you Blu3 Nemo.


  38. Bart T.

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  39. Halil Cansiz

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    I loved it, however since I am using ?t to clean bottom of my 40 ft sailboat I could use 6 ft more tubing. since vertical drop wil? not be more than 9 feet can I a?d 6 more feet to my tube? or do you have 12 to 14 feet tubing I can purchase? Best regards.

  40. Alex Luce

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    This system is outstanding!

  41. Denis

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    I am very satisfied
    my nemo works fine
    I would have liked a longer autonomy / for the battery
    But it is okay

    just a bad mark / for the charger connectors
    they are to the US standard /
    and does not work on European sockets
    (you should offer them as an option / or give a reference to buy them online)

    once this problem solved
    I was finally able to try nemo = it’s great
    light, easy to carry / for those who want to dive
    in shallow water / there is nothing better

  42. Bruce

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    The chest strap barely fits me, Unfortunately it wont fit at all when wearing a wet suit.

    • BLU3

      Hi Brian,
      Thanks so much for the great review!
      Sorry about the inconvenience with your harness. We can send you an extension right away. We will send you an email!
      Thank you,
      BLU3 Team

  44. Alison Walker

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    Disappointed it was opened by CA supplier and I didn’t receive my full refund due to exchange rate. I’m out almost $123.00cad!! I’ll msge David

  45. Nadja Schulz

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    Ich habe die Full Face-Mask dazugekauft. Bei der erfolglosen Montage des Nemo-Mundstücks an die Maske bin ich in der Innenseite der Maske nur ein kleinwenig abgerutscht. Dabei ist leider das rechte Plastik-Innenteil für die Kommunikation von seinem Kleber abgegangen. Wäre es aus einem Stück gewesen, hätte es gehalten…
    Wäre e möglich, dass Ihr mir das kostenlos repariert oder eine neue schickt?
    Ich habe bislang meine alte Maske genommen und leider erst jetzt festgestellt, dass sie völlig ausreicht. Am liebsten würde ich die Maske zurückgeben…
    Geht das?

    Für Euer Feedback bin Euch dankbar!

    Liebe Grüße

    Nadja Schulz

  46. Peter

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    Great innovative product. Loved it!!!

  47. Chookun

    Hello, I am a treasure hunter from Japan and I have recently purchased the Nemo which has allowed me to do underwater explorations I had not been able to previously. The Nemo has become an indispensable part of my equipment as I use it in not only the sea, but in rivers as well and would like to purchase an additional one to explore with my friends as well.

  48. Marcus Gross

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    This device is cleverly done, materials and construction are reasonable and of good quality.
    But……, even for an experienced scuba diver like I am the noise and the hammering airflow of the compressor destroys almost every fun, I think a beginner will even get scared by that.

    If I had known about that I think I would not have bought it, sorry!

    In my opinion you definitely should find and use a different type of compressor, otherwise I can’t image you will have big success with this product

    Best Regards,

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