So when it's in the water it can be completely hidden except for its eyes and nose. The nostril openings are on top so it can expose as little of itself to predators as possible, and they close so it can swim under water.
The openings in your nose are the nostrils.
The nostrils / nares are the openings in the nose.
The openings to the nostrils are call the naries. The singular is a naris.
The correct spelling of the plural noun is nostrils(nasal openings).
Nostrils
The nostrils or nasal openings, -- the anterior nares being the external or proper nostrils, and the posterior nares, the openings of the nasal cavities into the mouth or pharynx.
Openings for the rat to breath in and out.
No, only the nostrils on the nose.
nostrils
The internal nostril openings (nares) carry air from the nostrils to the mouth, so that a frog can breathe air when on the surface, by expanding its mouth to pull in and "swallow" air. Underwater, the internal nares close to keep water out.
The two openings to our noses are the nostrils.
The two breathing openings in the nose are "nostrils."