As it was mentioned earlier, marine collagen is mainly sourced from fish skin such as salmon and others. Note however that it can also be extracted from other sea creatures such as sea sponges, starfish, and jellyfish.

Note that some marine collagen production sites do not just use fish skin. Some other marine parts are used such as bones, tails, and other unused marine parts become sources as well.

Marine collagen is actually a better source of type 1 collagen. This is the most abundant type of collagen in the human body.

Studies suggest that type 1 collagen is also the better option if you want to maintain skin firmness and elasticity. It is better at restoring that youthful glow and plumpness of the skin, which is why it has been used in the cosmetics industry for many years.

Bioavailability refers to the percentage of a substance (such as a medicine or nutrient) that enters into the body and actually gets used in its metabolic processes so as to have any usable impact or effect.

The higher the bioavailability of a substance the better it is at providing health benefits and the greater is its effect on one’s health.

Note that marine collagen is often broken down into smaller peptides, which are amounts that are easier for the body to use. That means if you’re looking for increased hydration, more firmness, and improved skin elasticity due to using collagen supplements, then marine collagen may be the better option for you compared to bovine collagen.

Using this source of collagen is actually better for the environment since it can make use of the huge amount of unused and often discarded fish and other marine life parts globally.

This represents a total of about 11.7 million tons of marine life parts that are only discarded year after year. Compared to protein taken from bovine, the ones from fish and other marine life usually release only a fraction of the greenhouses produced by such an extraction process.

Pescatarians are those who do not eat meat (e.g. pork, chicken, beef, etc.) but do eat fish and seafood including fish. In short they do not consume meat from terrestrial animals.

This is of course a personal preference and a subjective worldview. On that note, using marine collagen is also a great option for people on a kosher diet, i.e. those who prescribe to strict Jewish religious law.

Hydroxyproline is one of the essential components of connective tissues, blood vessel walls, and of course the skin. This type of collagen is a great source of this amino acid.

Some studies suggest that collagen derived from fish and marine life is better at reducing wrinkles, increasing skin elasticity, and rebuilding tissues.