they will become vampires lol what do you think will happen silly nothing~!~
Gills
They have nostrils that lead to internal nostrils inside the mouth that lead to their lungs. When larvae they have gills which filter the water into the body and put into the plentiful blood vessels inside the gills. When wet or moist, most amphibians can get some oxygen into their body through their skin.
They are red because you can see the colour of the red blood through the thin walls of the gills. The gills carry the oxygenated blood into and around the fish just as your lungs do for you.
The beak-like mouth of an octopus is located on the mantel cavity at the back of the bulbous head of the octopus, surrounded by the eight legs. The mouth is the entryway to the mantle cavity which has gills inside of it. The octopus uses these gills to breathe. Water is brought into the octopus mouth and is then passed through the gills back into the body of water. As the water is pushed over the surface of the gills, oxygen is picked up by the blood in the capillaries of the gills.
The gills of the shark.
If there is a good blood supply to the gills of a fish it will be breathing and acting normally. As all fish are quite different this will have to be compared to an average happily living fish of the same br The red color of gills is from hemoglobin. Also, think about the size of the gills relative to the overall size that different fish can achieve it also stands to reason that sufficient oxygen must be transported to all the tissues via blood...as well as any expiration gases hence the gills have massive amounts of blood.
The gills of a fish are lined with many red, blood-rich capillaries called filaments. As water passes over the gills, oxygen is absorbed out of the water through the filaments into the bloodstream.
The gills of a healthy fish are bright red; this is because blood is flowing through them.
It uses it's gills to extract oxygen from the water to oxygenate it's blood and also to expel carbon dioxide from the blood.
No, They receive oxygenated blood through the umbiliacl cord, humans do not have gills.
The octopus passes blood to its gills where it dumps co2 and takes rich oxygen
Blood travels to the gills first in a perch because the gills are the site of oxygen exchange, where oxygen is absorbed from the water and carbon dioxide is released. This ensures that oxygenated blood is distributed to the rest of the body for cellular respiration, supporting the perch's metabolic needs.