With an Iggi shark, lawlz.

Scylla be pokin' noses.

This also has a brief view of the nasal cavity for Galeacoma.
Most common is having an open at the tip of their jaw, under the mask.
That tunnels like a normal nose, but they also have opening near their eyes for when their noses may be covered, thus it is hard to suffocate them.

Galeacoma must be very stealthy in water, I bet.

Concept & 'Iggi Shark' by
Galeacoma © Me