Fish do not breathe through their mouth like humans. They have gills which the use to filter the oxygen from the water.
Penguins don't have gills. Penguins have lungs, like all birds. They've simply opted for swimming instead of flying.
Embryos from both species have gills
! Fish take oxygen from the water by swallowing water (H20) into their mouths, but they don't take down their throats instead they force the water through their gills where blood in the gills soaks up the oxygen from the water.
Yes, but they have a closed circulatory system (their hearts have only two valves) and gills instead of lungs.
Fish Use Gills Instead of lungs. Gills Help fish to Breath. Fish Use Gills Instead of lungs. Gills Help fish to Breath.
Lungs are for humans,gills fish
Dogs do not have gills. Dogs have lungs instead.
no, because then those gills gills would need gills and they would need gills and so on, so on. They have specialised cells instead.
no, we humans do not have gills because they have lungs unless they use the oxygen thing to go underwater
through their gills.
Yes, they do have blow holes instead of gills, because they are mammals they are air breathers, which means they have lungs.
all fish have gills. they have gills instead of lungs, so they can breathe under water. Whales and dolphins do not have gills because they are mammals.
fins
No, They receive oxygenated blood through the umbiliacl cord, humans do not have gills.
gills
because humans do not have gills.