However, evidence is growing that there are marine sources of this material, which may well explain the majority of this colored material found in the deep ocean. (sciencedaily.com)
Part of this is debris from marine sources such as fishing gear. (earthday.org)
Being at the bottom of the food chain, these shrimp - like creatures do not have enough time to accumulate pollutants like other marine sources. (articles.mercola.com)