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Because they are not actually nostrils nor used for breathing.
The two holes on the front of the shark are used for sensing smells, but not for breathing.
While the shark swims, water flows through the "nostrils" and along the nasal passage. Inside the nasal passage are folds of skin which are covered in very sensitve sensory cells. These cells enable to shark to "smell" things. For example, a shark can "smell" blood through the water passing into its nostrils, pinpoint the source of the blood and hunt the prey.
So, the nostrils are used for "smelling", not breathing.
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Can sharks breathe air?
No. Sharks are fish, they breathe water through their gills.
Does shark breathe using gills?
Yes, sharks breathe through their gills, like most fishes do.
Does a shark breath through its gills?
Yes, sharks breathe through its gills like most fishes do.
What allows a shark to breathe without opening its mouth?
Sharks are fish and breathe through their gills.
How do hammershark breathe gill or lung?
All sharks are fish - therefore, they 'breathe' through gills.
Do sharks breath through their nose?
No - they breathe through the gills on either side of their body.
Shark and dolphins breathes through?
Sharks Breathe with gills. Dolphins Breathe with lungs, through a blowhole at the top of their head.
Do sharks live in Calgary?
Not the kind that breathe through gills, unless they are in an aquarium.
Does Shark have Gills?
Sharks have gills so they can breathe. They absorb the oxygen out of the water using their gills.
What enables sharks to breathe?
Gills
How do sharks breathe underwater?
Using gills because sharks are fishes and if look closely on animal planet-sharks you will see that there are like cuts on the left or right of their head,well that is gills and sharks uses it to breathe it takes in oxygen and gives out carbon dioxide----------------------------------------------------------------------Sharks "breathe" by using their gills. Water passes through the mouth and out the gill slits. Oxygen is exchanged through the tissues lining the gills.Unlike other fish SOME SPECIES of shark cannot pump water through their gills by opening and closing their mouths, they have to keep moving to make the water flow. In this way they are like ram jets. For a shark it is "Swim or die!"However, OTHER SPECIES of sharks can pump water over their gills when at rest and do not need to keep swimming. These species can be seen sleeping on the seabed around tropical reefs.Gills.sharks breath through there gills. if you look up a picture of a shark with its mouth open yiou can see the gills at the side of the sharks mouth.hope i helped youIt's a fish.. it has Gills.
Does a whale shark breathe from oxygen?
Like all sharks ( like fish), whale sharks breathe through gills which extract oxygen from the water.
