Fish!
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Crustaceans obtain oxygen through gills.
Yes, in a sense tadpoles use gills and lungs to obtain oxygen. When they first hatch they use gills, Eventually, they become less dependent on the gills as they grow lungs.
like any other fish. water passes through their gills and the gills absorb the oxygen through their gills.
any animal that is on land at some point in its life obtain oxygen the same exact way we do. the only animal that obtains oxygen in a different way is the fish and it obtains its oxygen by filtering the water it swims through between its gills.
Squids obtain oxygen through their specialized gills. Water is taken in through the squid's siphon and pumped over the gills where oxygen is extracted and absorbed into their bloodstream. The gills work in a similar way to the lungs of mammals, allowing squids to extract oxygen from the surrounding water.
using their gills they obtain oxygen from the top of the water.
by their gills but they're not gills like fishes because they're not noticeable.
gills
Gills are the internal organs used by aquatic animals to remove oxygen from water. They extract oxygen from water through specialized structures and transfer it into the bloodstream to support the animal's respiratory process.
They obtain energy through the air and obtain oxygen through their gills to breath
fish
Squid obtain oxygen from the water by passing it over their gills. As water flows through the gills, oxygen is absorbed into their bloodstream and carbon dioxide is released back into the water. This allows the squid to extract oxygen from their watery environment for respiration.