Ocean Technology Mantis Full Face Mask 900365-000 027136

Mfg Part #: 900365-000

Ocean Technology Mantis Full Face Mask

Scuba Lab Best Buy!
  • Can be used with any regulator
  • Dual tempered anti-fog lenses for exceptional visibility
  • Totally eliminates jaw fatigue
  • Built in purge-simply exhale through your nose and all the water drains away through a one-way valve
  • Crystal silicone - The highest grade silicone available for a soft comfortable seal
  • Quick release straps for easy donning and doffing
  • Breathe comfortably and naturally through both your nose and mouth
  • Multi-Head Straps for adjustments included
  • Easy nose access for equalization  
  • Dual accessory ports for communication
  • COLORS: Black Silicone or Clear

Customer Reviews for Ocean Technology Mantis Full Face Mask:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 20 reviews.

Rating: Great mask, tricky fit
Reviewer: Ben
Used this for this first time off Fujierah, UAE. Found it tricky to get a comfortable adjustment on the straps and was constantly pulling down to keep it from slipping off my chin. Once I found a good fit, (tighter on the lower straps than the upper) I did not have to fiddle with it. Visibility was just wonderful and I wasnt afraid to laugh at silly things with my dive partner (using a traditional 2nd stage). Looking forward to more dives with this mask!

Did this Review help?

Rating: Very comfortable
Reviewer: Tom Adams
I got this mask due to jaw fatigue and a desire to breath through the nose and, I am happy with the results. It fits on my face well and is easy to put on and take off both out of the water and in the water. My diving is so much more enjoyable now. Nice not to have to worry about fogging either - no spit required to have clear lenses. I did not get the surface air valve and will be ordering it soon as on a boat dive it could save some air even though I did not notice a real change in the consumption. My bottom time was about the same - probably because my breathing is more relaxed and comfortable. Bottom line - great mask for those who have discomfort holding a regulator in your mouth.

Did this Review help?

34 out of 47 people found this review helpful.

Rating: Mantis Full Face Mask
Reviewer: Dennis Jameson
Bought this mask for the safety of the 5 strap. I gold dredge in swift moving rivers and the cheaper 3 strap full face masks leak water and are easily swept off your face. The Mantis performed flawlessly in extremely fast water.

Did this Review help?

18 out of 31 people found this review helpful.

Rating: great
Reviewer: James Rowe
Excellent value good quality

Did this Review help?

Rating: Ocean Technology Mantis Full Face Mask Review - Scuba Gear Customer Reviews
Reviewer: Robert N.  -  View all my reviews
I have spent a fortune on conventional masks in an effort to stop flooding. This is the only mask that has achieved it. Absolutely brilliant, I can now enjoy every dive.

Did this Review help?

4 out of 5 people found this review helpful.

Rating: Mantis Full Face Scuba Dive Mask Clear
Reviewer: JOHN M.
what a wonderful product. i have dentures and worry about losing my regulator, not any more. the installation of my regulator was easy, less than ten minutes. it took just a little time to learn that i could breath through my nose. im very comfortable in the water but the security afforded by the mask and the breathing through my nose has added another level. this comfort is really important on a deep or complex dive. the mask is comfortable to wear, and seals well even though i have a beard. i mostly dive from a boat, and do not use a snorkel, i use very little air on a a shore dive getting out to the spot, so no problem there for me. for the price and quality i would recommend this to any diver. a very good product.

Did this Review help?

76 out of 141 people found this review helpful.

Rating: Mantis Mask
Reviewer: Nathan Blakeslee
I love that it comes from a name-brand manufacturer (OTS). Great product for the cost without heavy maintenance. I purchased to dive and clean boats with- donning is quick and easy. I also have little fear about straps breaking down because of the snap buckles- Encourage other to also purchase the clear masks so you can watch for possible mold issues or contaminates. Spend the extra money for this mask.

Did this Review help?

79 out of 147 people found this review helpful.

Rating: Full Face Mantis
Reviewer: Robert W Popp  -  View all my reviews
The clear color is the smartest allowing only a little perifrial loss.It fits just fine for a slightly smaller face. The price is more down to earth than the higher priced models with as many extras. Rob Popp

Did this Review help?

271 out of 555 people found this review helpful.

Rating: Best full mask!
Reviewer: chad d.
I love the full mask easy to put it on and can be easily adjusted to my face. It s very comfortable and doesnt leak. Highly recommend to buy it worth the price for the full mask!

Did this Review help?

26 out of 46 people found this review helpful.

Rating: Mantis full-face mask
Reviewer: Frank Fish
this is a marvelous product. it has a low volume, so you dont waste air. it makes diving extremely comfortable. it is useful for people who have a strong gag reflex and have trouble holding a regulator in their mouth. i was able to dive down to 80 feet with no problem. the nose pinch worked well. the quick-release buckles make getting the mask on and off relatively easy. the only problems were that if you wash out the mask before a dive it is difficult to get every of water out and you end up breathing a fine watery mist at the beginning of the dive. when you come to the surface you are locked into the mask, so be sure to carry a spare mask or surface right at the boat. one should probably disconnect the mask from the regulator for transport and storage.

Did this Review help?

311 out of 548 people found this review helpful.

See all 20 customer reviews...

Questions and Answers for Ocean Technology Mantis Full Face Mask:

  • Scott:

    Could you advise if the Mantis full face mask will be compatible with the "Brownies Third Lung™ Explorer 390, I am looking at purchasing this unit and these masks would be get for the young fellas. regards Scott

    Darrick  (Certified Scuba Instructor at Scuba.com):

    Hello Scott, yes you can use this with the 3rd lung. All you need to do it zip tie the regulator to the mask like you a mouthpiece. If you would like to place an order or have any other questions please feel free to give us a call at 1.800.347.2822.

  • Sharon:

    Is it possible for a snorkel to fit on a full scuba mask so you wouldnt have to have anything In your mouth?

    Bill  (Certified Scuba Instructor at Scuba.com):

    Yes a snorkel can be used in place of a regulator.

  • Sharon:

    Thx to Bill for answering my question that a snorkel can fit on a scuba mask in place of the regulator. Ill only use it for swimming laps. (My snorkel mouth piece has begun to hurt my gums.) My next question : What is the least expensive scuba mask and snorkle you can recommend?

    Bob  (Certified Scuba Instructor at Scuba.com):

    For more detailed information on products, pricing and availability, please contact our instructors at 800-34SCUBA (347-2822) or by email at info@scuba.com

  • phillip:

    i have a handicaped child that is 15, we bought one full face mask and the top does not seal real well on his forehead. a childs fave is more oval then an adults. will this mask seal better for a youth or childs face?

    Bill  (Certified Scuba Instructor at Scuba.com):

    This mask is high quality silicone and seems to fit just about everyone. As long as the item is not used in the water you have up to 60 days to refund or exchange it.

  • Bryce:

    are the lenses on this mask available for prescription?

    Darrick  (Certified Scuba Instructor at Scuba.com):

    Hello Bryce, no these only come in standard lens there is no optical quality option with this mask.

  • Dan:

    Is it possible to use this with a SpareAir, and swap them as needed during a dive? I feel somewhat "naked" without an alternate, totally independent air source.

    Darrick  (Certified Scuba Instructor at Scuba.com):

    Hello Dan, yes you could use it that way but would not suggest it. If you would want to run that set up you would need to hold either the regulator or the spare air in place since you normally would have the regulator attached to that spot by a zip tie. Now if you dove with a spare mask as a back-up that the spare air system if you ever had that happen you would be able to ditch the mask grap the spare air than put your back-up mask on.

  • George:

    Hi, can anyone advise me if its possible to connect a second breathing regulator (Octopus) to the Mantis full face mask. Also is it possible to connect any regulator this mask.

    Aaron  (Certified Scuba Instructor at Scuba.com):

    Hi George, The Mantis can fit most current regulator. No you can connect an octo to this mask.

  • Richard:

    Do you have to used a zip tie with the 2nd stage where the mouth piece usually goes?

    Darrick  (Certified Scuba Instructor at Scuba.com):

    Hello Richard, yes it would be the same type of attachment that you would use to attach your mouthpiece to your 2nd stage regulator. Look at it like the mask is now your mouthpiece.

  • Michael:

    Is the Mantis buddy phone compatible with the D2 buddy phone? I.e. can 2 divers communicate if 1 has the D2 and the other has the mantis buddy phone? Thanks. Mike.

    Bob  (Certified Scuba Instructor at Scuba.com):

    Yes. The Buddy Phone unit itself will be the same.

  • Jon:

    Is there a regulator out there that directs bubbles WELL away from my gopro mounted on my diving mask? Im fine against current or while swimming but when stationary the bubbles just really mess up my vids when they surface directly in front of the GP lens. I have a mask that has a GoPro mount just above my eyes on my forhead.

    Bob  (Certified Scuba Instructor at Scuba.com):

    Unfortunately even a regulator with the wider exhaust T still directs bubbles up in front of the face when stationary and sitting vertically. They are all designed with the thought that a diver would be swimming horizontally for the majority of their dive.

The Mantis full-face mask is an ideal solution for the recreational diver who wants to truly experience all that diving has to offer. Combining the Mantis with our latest generation Buddy Phone®; and Super Mic creates a incomparable combination of price and performance for any recreational dive profile.

Our latest generation Buddy Phone features a new design with an innovative squelch to help eliminate unwanted bubble and marine-biological noise. The squelch gives increased intelligibility without sacrificing power.

When diving with the Mantis FFM and Buddy Phone, you will be able to communicate with all Single Sideband acoustic underwater devices within range and on the same frequency. This includes other Buddy Phone® divers, divers using the Aquacom® SSB-2001/2010 diver unit, and surface units such as the SP-100D2.

The Super Mic is 100% floodable to any depth and has all the benefits of an acoustically balanced, noise-canceling microphone. It packs a lot of power into a compact design to help maintain the Mantis' low-volume design.

The Mantis mask comes in either black or clear silicone. An optional surface breathing valve is available to allow you to conserve your breathing gas supply by breathing ambient air while on the surface.

See and order Mantis Mask replacement parts here.

The Mantis mask is:
Easy to equalize via a normal 'nose pinch'
Economically Priced
Low volume
has dual tempered anti-fog lenses
Uses your favorite second-stage regulator (not supplied)
made of one-piece, non-rigid silicone skirt
uses a 5-point 'spider' head strap with quick-release buckles
Has dual accessory ports for communication


I need glasses. Is there a kit for this?

Yes! Contact your OTS salesperson to find out how to install the eye wear accessory kit made for the Guardian. Your mask is already set up to use this!

What happens if my mask fogs? Do I still need defogger?

Due to the unique air system of Full-Face Masks you do not need any defogging agent. Your mask will not fog!



View all Ocean Technology Masks

Choose Currency:

Scuba.com, 1752 Langley Avenue, Irvine CA 92614