Our mask also has all the standard parts/functions that the majority or all full-face type masks have.

The membrane at the end of the tube directs fresh outside air inwardly when breathing in into the incoming air vent, and it also does not allow to breathe out through it.

The membrane at the end of the tube directs the waste air outward when breathing out, and it also does not allow breathing in external air through it.

A special rubber fold separates the upper and lower part of the mask in the area of the bridge of the nose.

At the top of the mask, there is fresh air, in the lower part of the mask – the waste air.

Membranes of the nose compartment allow fresh air to flow from the top of the mask to the lower part of the mask when breathing in.

At the same time, these membranes block the flow of waste air from the lower part of the mask to the top of the mask during breathing out.

Protection from fogging is achieved by dividing the mask into the upper part and lower part, in the upper part fresh air is accumulated, and its volume increases after each breathing in.

When breathing with outside air – clean air at the top of the mask drains the moisture that settles on the glass and prevents the glass from fogging.

Adjustable length of mask attachment straps.

The removal of water from the mask in water is performed by a strong sharp breathing out – water is pushed out by internal pressure through the soft membrane of the lower valve.

The water from the mask in the air is removed by mechanical means – the mask can be turned over, and the water will pour out.


The Mask of the Sea Voice for the “snorkeling” mode was essentially designed to correct engineering errors affecting the safety of using common, to all other, full face masks for snorkeling. We conducted a study of the dynamics of the gas environment inside the existing masks and made the following corrections:

  1. We added a new type of membrane that blocks the intake of exhaust air in the snorkel tube and masks rim and guarantees the performance of the separation membrane in the top of the tube. Our membranes are easily accessible for washing with fresh water after use and are easily replaceable. This ensures stable blocking of the breath through the channels of exhalation and reduces the amount of exhaled air available for inhalation by half.
  2. We’ve increased the cross-sectional area of all sections of the air ducts involved in the air flow, starting with the hole in the top snorkel tube (which is closed with a float when diving) and ending with air ducts in the rim of the mask.
  3. We removed the airflow guides, which sharply deflect the air coming out of the tube onto the glass of the mask in other masks – the air from our tube flows freely onto the glass of the upper part of the mask without any interference.
  4. We increased the volume of the upper part of the mask, where fresh air is located, which not only increases buoyancy due to the mask but also makes breathing smoother, as there is more time to accelerate the incoming air flow in the snorkel tube.
  5. We’ve added a float blocker for manual blocking of the air flow in the mask – this allows when the float is blocked, to use the mask in the “snorkeling” mode underwater in any position of the snorkeler without the risk of flooding – even while swimming upside down, water will not get into the mask through the snorkel tube.
  6. We made an easy-open latch with an adjustable height of the connection of the left and right tapes on the back of the head. This allows not only to instantly remove the mask if necessary but also accurately fix the mask on the head, depending on the shape of the skull and the hairstyle.

We will continue the analysis and testing using more tools when they become available to us.