If anthropomorphic creature will live among the humans (or in technical civilization, at least), sooner or later they will be required to use the aqualung (scuba) for diving. Their body are mostly similar to human, but if the tail and face features. A last factor they have problems with the designing of diving masks. In the correct diving mask should be possible to support the volume of air through the exhalation of air through the nose. Also the mask should be to provide to pinch the nose to equalize the pressure in the inner ear. Unfortunately, the few who adhere that at drawing of this case. Still cool.