Cutin: This is a long-chain fatty acid polymer, that enters the spaces between the cellulose microfibrils of the epidermal cell wall, making her cutinized. It is later deposited externally and together with the wax forms the cuticle. The cuticle helps to restrict sweating; being bright helps to reflect the excess of solar radiation and being a substance that is not digested by living beings, it also acts as a layer, protecting against the action of fungi and bacteria. Cuticle formation begins in the early stage of organ growth.
well according to my memory and one of the save the earth communities, the great white shark is almost extinct cause of pollution, and mainly poachers, lots of poachers for soup made of shark fins.
they would cut off the fin then throw the dead shark back in the ocean.
