Squid have gills along their sides... thus obtaining oxgen similar to a fish
same way the fish do
Diffusion and osmosis.
They obtain oxygen form the water in the same way as fish do.
No. Marsupials are vertebrates, i.e. they have a backbone. Squid are invertebrates (no backbone). Marsupials have pouches. Squid do not. They release eggs into the water. Marsupials obtain oxygen by breathing, using lungs. Squid obtain oxygen through a pair of long 'gills' covered in leaflets called lamellae. Marsupials have fur, hair or skin. Squid do not. A kangaroo (for example) is a type of marsupial.
The vampire squid, generally found around the south carribean areas and along the coast of peru, obtain oxygen through the suction cups on their tenticles.
for camoflauge so the squid can change color to better blend into its surroundings.
The body temperature of a squid is influenced by the temperature in their surroundings. This is because they are cold-blooded animals.
The skin is of a giant squid is covered in chromatophores, which enable the squid to change color to suit its surroundings. Like a chameleon
By actively hunting for it.
Our body obtain oxygen to our body by breathing.
Oxygen - yes. Air - no. Not much of that around underwater.
Like the octopus, the squid use ink and a camouflage to blind the enemy predator and blend into its surroundings. Some squids (like the Humboldt squid) use hook on their sucker cups to defend it's self.