Sea turtles are among the marine animals most severely affected by plastic debris and discarded fishing gear, suffering entanglement injuries that cause drowning, starvation, and chronic pain across all seven species.
Sea turtle entanglement represents welfare suffering on an enormous and largely invisible scale. Unlike terrestrial wildlife deaths which may be visible, sea turtle entanglement occurs beneath the surface and most deaths are never recorded. The suffering profile is severe: entangled turtles experience drowning (when unable to breathe), progressive strangulation as growing animals tighten around fixed debris, and the chronic pain of infected wounds from cutting gear. Stranded turtles rescued alive often require months of intensive care. The welfare case for marine debris reduction is therefore not only an ecological one — it is also a direct reduction of profound individual animal suffering across a population of animals with complex behaviours and potentially substantial sentience.