no shark do not camouflage
yes it can
They might blend in with there surroundings
The bull shark cannot camouflage its body like the squid, the octopus, and other sea predators. However, due to the fact that the upper side of the bull shark is grey and the underside is white, you may consider this a «passive camouflage». You may also consider bull sharks preference for muddy river waters to catch prey a camouflage technic.
Yes, for instance look at the markings on a whale shark. (see related link below).
So that they can approach their prey without being seen
The blue coloring of the blue shark serves to camouflage the shark as it encroaches upon its prey. Although the blue shark has few predators, the camouflage does protect it from potential threats.
so the prey doesnt find it and it can sneek up on the prey
Not all sharks are at the top of the food chain, and even those that are are vulnerable to predation while they are young.
Leopard sharks are known for their distinctive spots, which are present along their bodies. These spots serve as a form of camouflage to help them blend in with their surroundings as they hunt for prey.
Kinda-sorta, but not really. They are dark on top and white on the bottom so that they'll be more difficult to spot both from below and from above, and that's about it. They can't change colour or anything like that.
Angel sharks are predators that primarily feed on fish, crustaceans, and mollusks. They are ambush predators that lie in wait for their prey, using their camouflage to blend in with the ocean floor before striking. They have sharp, pointed teeth that are used to catch and consume their prey.
Cookie cutter sharks typically swim at speeds of around 1 to 2 miles per hour (1.6 to 3.2 kilometers per hour). They are not known for their speed, as they rely more on their unique feeding strategies and camouflage to catch prey. These sharks are mostly found in deep waters and are more active during the night.