The primary difference between marine and bovine collagen lies in their source and the type of collagen they provide. Marine collagen, derived from fish, is primarily Type 1 Collagen and benefits hair, skin, and nail health. Bovine collagen, derived from cows, provides both Type 1 and Type 3 Collagen. It has all the benefits of marine collagen, with the added benefit of supporting joint health. Read more here.