Why the need for collagen?
Collagen is most commonly found in the skin, bones and connective tissue within the body, providing structural support, strength and a degree of elasticity (in combination with elastin). Collagen is also required in the replacement and restoration of dead skin cells. Some collagens also function as protective coverings for delicate organs in the body such as the kidneys. 
Collagen is secreted by a variety of different cells, but primarily by connective tissue cells. While young, the body consistently produces collagen, but collagen synthesis begins to decline around the age of 40, with a dramatic reduction in synthesis in women after menopause. By the age of 60, there is typically a considerable decline in collagen production. This decline reduces the structural integrity of the skin, hence resulting in sagging skin, the formation of lines and wrinkles and the weakening of cartilage in joints. 
Collagen, like all proteins, is made up of amino acids - both essential and non-essential. Essential amino acids are those you cannot manufacture. Because you lack the enzymes necessary to create them from other biological molecules, you must supply them from your diet each day. They include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine. Arginine is conditionally essential; although you can synthesize it, during times of rapid growth you may not be able to make enough to keep up with your needs. Non-essential amino acids, on the other hand, are not absolutely required in the foods you consume. However, your diet must still offer adequate total protein to maintain optimal health.
What does Oseanus Marine Collagen contain?
The essential and non essential amino acids which make up for components of collagen needed for replacement and restoration of dead skin cells.
