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What do fish have that whales don't?
One thing that fish have that whales do not have are gills. Fish need gills to breathe, but whales have a blowhole because they are mammals.
Why can't whales breathe underwater?
Whales are mammals, not fish, so they need to come to the surface to breathe air through their blowholes. They cannot extract oxygen from water like fish can through their gills.
Why don't whales have gills for breathing underwater?
Whales are mammals, not fish, so they do not have gills for breathing underwater. Instead, they have lungs and need to come to the surface to breathe air.
Why don't killer whales have gills?
All whales are mammals and need to breath air from the surface.
How dolphins and whales different from fishes?
killer whales are mammels there for need to come up to take in air.fish however can breath under water.fish also lay eggs but killer whales and dolphins give birth to a smaller version of themselves
Why do whales need to breathe air despite living in water?
Whales need to breathe air because they are mammals, like humans, and require oxygen to survive. Even though they live in water, they have lungs and need to come to the surface to breathe.
Why do you not have gills?
Land mammals do not have gills because there is no water needed to filter out to get oxygen. Fish have gills because they need to filter out water (and other objects) to get the oxygen to breathe.
Do fishes need gills to breathe in water?
Just as you need lungs to take in Oxegen and breath out Carbon Dioxide so fish need gills
Can white sharks only breathe underwater?
Yes, white sharks have gills that allow them to extract oxygen from water, which is how they breathe underwater. They need to constantly swim to ensure a flow of water over their gills for oxygen exchange.
How do noctunal fish breathe?
All fish, whether nocturnal or not, use their gills. They don't need AIR to breathe, they need water...
Do you need to have gills to breathe underwater?
Yes, you do need gills to breathe underwater. Gills process the water through them that makes the water allowed to go through the animal's body without drowning them. Gills are the only thing that keep the animals that live underwater, alive. they also don't make you breath the air in-you breath the oxygen in the water!
Why do dolphins need air?
Dolphins and all whales need air to breathe because they are mammals with lungs, not fish with gills. they are believed to have evolved as land animals and then returned to the sea.
