We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Author comment: Plastic pollution as an emerging threat to deep-sea bioluminescence — R1/PR4
Original title: Author comment: Plastic pollution as an emerging threat to deep-sea bioluminescence — R1/PR4
Summary
Deep-sea creatures use natural "glow-in-the-dark" abilities to hunt, find mates, and communicate — and this paper (a review of existing research) warns that plastic pollution reaching even the deepest ocean may be disrupting this glow through toxic stress and tissue damage. While this doesn't directly measure human health effects, it's another sign of how far plastic contamination has spread into ecosystems we depend on for food and ocean health, and the authors call for more monitoring to understand the risks before they cascade further up the food chain.
Bioluminescence is a predominant phenomenon in marine environments, the production of light by living organisms through enzyme-mediated chemical reactions involving luciferin, the light-emitting substrate and luciferase, the enzyme that catalyses its oxidation. In the deep sea, bioluminescence is not merely a visual trait but a critical ecological function supporting prey capture, mate recognition, communication and other species interactions. Recent evidence indicates that plastic exposure can alter bioluminescent responses through ingestion, tissue stress, oxidative damage and interference with chemical signalling pathways. This is of growing concern because plastic debris and microplastics are increasingly detected from surface waters to abyssal environments, making them bioavailable to deep-sea organisms. Since many deep-sea organisms depend on bioluminescence for survival and reproduction, any impairment of light production mechanisms can influence not only individual fitness but also prey–predator interactions, trophic transfer and ecosystem functioning. This letter highlights plastic pollution as an emerging threat to deep-sea bioluminescence and calls for long-term monitoring and policy attention to protect biological light-mediated ecological processes in the deep ocean.