Whale shark gills are similar in structure to other fish gills. Oxygenated water is passed over the gills which have a rich, near surface blood supply and gases are exchanged between the blood and the water. The gills are feathery and have a large surface area so that there is enough gas exchange to keep the fish supplied with the oxygen it needs.
There is very good explanation at the web link below
howstufworks
A shark's gill functions by taking oxygen out of the water and into the shark.
nononoonononio
Fish use gills to extract oxygen from the water passing over the gills.
Fishes extract the oxygen from the water that goes through the gills.
Fish have gills, as they swim water passes over the gills and extract oxygen from the water.
Fish pass water over their 'gills' the gills extract oxygen from the water.
Fish have lamellae in their gills. As the water flows through the gills and over the lamellae, the oxygen is extracted from the water.
They use their gills to extract the oxygen from the water flowing over them
Humans have lungs to extract oxygen from the air. Fish have gills to extract oxygen from the water.
No. We cannot get oxygen from water. The oxygen that forms part of the water itself is locked away in H2O molecules and our bodies have no way of extracting it. Most water does contain dissolved oxygen, but since we do not have gills we cannot extract that either.
The gills of a shark (and other fishes) extract oxygen from the water, allowing the shark to breath.
Sharks are a fish. Fish have gills that extract oxygen directly from the water in which they live.
Like all fish, sharks extract dissolved oxygen from the water through their gills.
Fish use gills to extract oxygen from the water to 'breath' .