Not only is marine collagen more sustainable sourced (from fish skin to reduce food waste) than bovine and pig, it also tastes better and clinically proven to be most effective of the three.* Quick facts: - Marine collagen contains more glycine than bovine - Marine collagen has molecular weight of 3,000 daltons vs. bovine's 5,000 daltons. This means marine collagen has way smaller particles and thus better bioavailability - Marine collagen is seven times easier to break down compared to pig collagen*