Do Fish and other water mammals have a sense of smell?

Question

Just Curious

Answer 1

Yes, fish have a sense of smell. You need only look at the shark, which goes through life quite happily with two olfactory lobes (the part of its brain that processes smell information) that are both larger than the entire rest of its brain.

Just because YOU can't smell anything in the water doesn't mean aquatic animals can't.

And fish aren't mammals. Fish and mammals are two completely different classes of animals.

But aquatic mammals also have senses of smell...look at the dolphin. It doesn't have a long nose because it wants to have lots of teeth - it has a long nose to process the smells it gets through its nostrils. A dolphin's nose and a dog's snout perform the same purpose (though they evolved separately; they're excellent examples of creatures that exhibit what is called "convergent evolution.") Beluga whales have lots of teeth too, but tiny little mouths.

Answer 2

Yes, and no.

Fish certainly have a sense of smell - it's how most of them find food. Sharks, for example, have a famously potent sense of smell.

Some fish find food visually, some find it by sound, some detect bioelectric fields. But most use smell.

Water MAMMALS, on the other hand, generally don't detect smell under water. They might detect tastes in the water, but if they were to try and smell things, they would drown.

Answer 3

They must those are must have senses for every living creature feeling smellin seeing hearing and making sounds maybe some dont but say the entirely under water creatures dont have the sense of smell it doesnt sound correct
plus how do the know their food animals never rely on their vision when it come to food or there nutrition they are not like us i eat big mac but not with tomatoes and things like that they eat everything the can while they can no matter how it look
so i guess yes i bet on it

Answer 4

Yes. The fish have much keener smell than us. Channel catfish can smell about 10X10^-11 M. The fish uses lateral line and some have specialized barbels (as chemoreceptors). In water mammals cannot smell. They have lungs, probably if they breath in water their lungs will collapse.

Answer 5

Sharks smell blood from miles away so I guess the answer is yep.

Answer 6

yes,especially the shark he can smell a single drop of blood even a mile away

Answer 7

probably not because thay have nothing to smell with, and its not neccecery in the seven life processes, as long as it has something to breathe with - gills.

Answer 8

yes, of course they do

Answer 9

im sure they do