Did you know we all have four nostrils? We have two you
can see, two you can’t. This discovery came from watching how fish
breathe. Fish get their oxygen from water, most of them have two
pair of nostrils, a forward facing set for letting water in and two for letting water out.
Our other two nostrils, migrated toward the back of the head, to become internal nostrils
called ‘choannae’ – Greek for ‘funnels’. They connect to the throat
and allow us to breathe through our noses.