Plastics, glass, metal, paper, cloth, rubber, and wood.
Anything man-made, including litter and fishing gear, can become marine debris once lost or thrown into the marine environment. The most common materials that make up marine debris are plastics, glass, metal, paper, cloth, rubber, and wood.
Glass, metal, and rubber are similar to plastic in that they are used for a wide range of products. While they can be worn away-broken down into smaller and smaller fragments, they generally do not biodegrade entirely. As these materials are used commonly in our society, their occurrence as marine debris is overwhelming.