Marine pollution — from plastics and oil to noise and chemical contamination — causes widespread suffering across ocean wildlife. Understanding the welfare impacts is essential for motivating effective policy change.
Marine animals caught in plastic debris experience prolonged suffering — entanglement causes physical wounds, restricts movement and feeding, and often leads to slow starvation or drowning. Animals coated in oil lose thermoregulation and waterproofing, leading to hypothermia and toxic feather or fur ingestion. Chronic low-level pollution causes suffering that is harder to see but no less real: whales experiencing noise-induced hearing damage, dolphins with compromised immune systems from PCB exposure, sea turtles with gut blockages from ingested plastic. The scale of marine pollution suffering is enormous but largely invisible, occurring far from human observation. Welfare arguments can complement conservation arguments in building the public urgency needed for regulatory action.