«High levels of microplastics found in Northwest Atlantic fish: New study finds microplastics in the stomachs of 73 percent of mesopelagic fish caught in the Northwest Atlantic — one of the highest levels globally.» (sciencedaily.com)
Recent studies have detected the presence of significant levels of dioxins in the commercial shrimp Aristeus antennatus [253] and significant levels of persistent organic pollutants in mesopelagic and bathypelagic cephalopods [254]. (journals.plos.org)
The significance of the photophores on the underside of mesopelagic fishes has long been thought to provide camouflage against predators swimming below, helping them to blend in with any residual light shining down from the surface. (sciencedaily.com)