No.
no they dont have any camouflage of their enviroment
no. they hide from their prey
like every other turtles they use their shells for camouflage, to hide, and to protect their selves from praetors.
To hold their spine, to help camouflage them
This depends on your definition of camouflage. It can be said that all animals camouflage themselves to some degree, called Crypsis camouflage. i guess a crypsis camouflage
Yes, because their shell blends in with the ocean floor *so says my science teacher* ;P
To get Diamond camo in Black ops 2 you need to unlock the gold camo for all weapons in that category, Example To unlock Diamond camo for Mp 7 you need to have the gold camo for all the other Sub Machine Guns. Hope this helped.
Technically, it uses both, because tortoises move inside their shell, using mimicry to imitate a rock. It uses camouflage because when it mimics a rock, its shell is sometimes the distinct color of the rock, or the environment it is hiding in.
some turtles are but not all like snapping turtles are.
So they can blend in with their natural habitat and protect themselves from predators
All turtles are reptiles.