We’ve covered in detail all the questions we came across since starting Ninja Shark regarding the safety and other concerns here.

Here is a swift take-off


When human beings breathe in and out, we inhale oxygen and exhale carbon dioxide.

When we’re exercising, our body needs more oxygen to provide us with energy, and so our breathing increases.

While we breathe faster, we also have more shallow breaths, and this is where CO2 becomes an issue.

There’s more carbon dioxide in our exhalations than there is oxygen in our inhalations. If we’re constantly exhaling in an enclosed space then we won’t be able to exhale deeply enough to push out all the carbon dioxide.

It’s like breathing into a plastic bag – the CO2 will all build up inside the enclosed space until it becomes toxic, fills up the entire space, and we all fall unconscious.


We have taken the human breathing process into account when creating full face snorkel masks. That’s why every mask has a separate chamber for breathing and viewing. The breathing part seals the mouth and nose off from the rest of the mask, forcing carbon dioxide downwards where it can flow out of the sides of the mask.

All our masks have been heavily improved upon to reduce the chance of CO2 build up. We’ve added an additional exhalation channel and improved on our design to even create a separation between the air exhaled from the mouth and from the nose.

Snorkelling, swimming, and any other water activities always come with an element of risk.

Nobody claims that the ocean is safe! It’s always important before heading out into the open water to make sure that you’re familiar with the beach conditions and rips, or go in with a more experienced buddy.


We hate to tell people what to do, but when it comes to keeping safe and saving a life, we reckon it’s okay to do it. If you’re planning on purchasing a full face snorkel mask, please remember that this isn’t an opportunity for you to run wild in the water.

Sure, snorkelling is made easier, breezier, and freer, but that doesn’t mean you can just let go of all the precautions you’ve been taught all these years. Full face snorkel masks have been designed for a relaxing, smooth, and slow snorkelling experience.

The snorkelling itself was never intended to be a high-intensity sport or activity, it’s a way to peacefully stroll through the ocean and admire its plant and animal life. Snorkelling isn’t going for a run, it’s going for a slow dawdle. For that reason, you should try to always swim slowly and avoid going too fast, which can cause shallow and fast breathing (thereby releasing more carbon dioxide into your mask).

Full face snorkel masks have also been specifically designed for surface swimming. The idea is to stick to the surface of the water and enjoy the views from afar. This is taken into account when designing the full face mask, no manufacturer is out there designing a snorkel mask that goes beyond the surface. Because that’s not what snorkelling is!


It’s important to take the following safety measures before heading out to play

PRACTICE putting on and taking off your mask – Sounds boring, but very necessary. You’ll want to make sure you can confidently put on and take off your snorkel mask without an issue before you head out to sea.

There are all kinds of situations out in the open water that’ll have you need to put on and take off your mask quickly, and you wanna make sure you can do that without panic and disruption. Practice until it becomes a smooth, easy transition that’s familiar.

KNOW THE SIGNS OF CO2 BUILD-UP – You should still know the signs of CO2 build up on the off chance that something goes wrong with your mask. Rather than wait until you’re convulsing or in a coma, know the signs early on so you can take off your mask quickly (using the practice you did before!)

Early signs of carbon dioxide poisoning include breathing difficulties, hyperventilating, dizziness, sleepiness, or impaired consciousness. If you do feel any of these symptoms while swimming, stop as soon as you can and take off your snorkel mask to release the CO2.

– Look, if you really want to go below the surface, it’s a free country. We’ll remind you that full face snorkel masks aren’t built for that purpose and impart you with some tips.

Since there are no nose plugs on a full face mask (unless you’ve purchased our EQUALISER mask), it can often feel like you’ve got suction cups on your face if you try to go too deep underwater.

This is because the pressure is difficult to equalise. Some people find no issue with the weird sensations of a full face snorkel mask, while others get deeply uncomfortable. There are different tips and tactics you can try to equalise with a full face snorkel mask on, but it’s always important to test this out in an easy snorkel spot with lots of supervision before giving it a go in open waters.

GO WITH A MATE – We can’t stress it enough, but snorkelling is a buddy activity. It’s all too easy for things to go wrong, and without someone nearby, you can be difficult to spot and save from the shore. Always take a mate with you, it’s heaps more fun, and you’ve got the added sense of safety from having a companion there.

This will help dissipate any fears, anxieties, worries, or panic while out in the water.

KNOW THE OCEAN CONDITIONS – As fun as it is to snorkel somewhere new and different, always be aware of the conditions and if you don’t have a buddy then make sure you’re in constant view of a lifeguard.

Sometimes there’ll be lots of jagged rocks under the water, there’ll be rips, currents, and other dangers like jellyfish or sharks in the area. Make sure you’ve sussed out your spot before you head for a snorkel.

DON’T PUSH YOURSELF – We all do it. You’re out there having a great time, start to experience some discomfort, but convince yourself it’s no big deal so that you can keep playing in the water. It’s extremely important when snorkelling not to push yourself. The last thing you want is to hold out and hold out on a bit of pain, then allow it to go too far while you’re out in the middle of the ocean.

Stop as soon as you feel the onset of discomfort, pain, or tiredness, and you can always jump back in the water later. If you’re too scared of disappointing your snorkel buddy by cutting the trip short, don’t worry about it. Your safety is more important, and we’re sure they’d rather be out of the water a little early than stuck having to try to save your life out at sea. Buy them a beer on land and you’ll be right.

KNOW HOW TO DO STUFF – Don’t just grab your fancy new snorkel and run out to sea in a fit of excitement! Before you head out snorkelling, make sure you know how to defog your mask, purge your snorkel, take your fins on and off in the water, and do all the necessary things. Don’t do anything for the first time while out in the middle of the sea.


Stay amazing,

Stay safe!