In this engaging discussion, Tim Smyth, a Professor at the Plymouth Marine Laboratory, unveils alarming findings about the ocean's darkening trend. He explains how fading light in the photic zone, home to 90% of marine life, threatens delicate ecosystems and vital biological processes. The podcast highlights the impact of this phenomenon on essential migrations, particularly of copepods, which play a crucial role in ocean health. With satellite imaging revealing significant reductions in ocean clarity, Smyth urges listeners to consider the implications for marine species and their habitats.