Sea otters play a vital role as keystone species in kelp forest ecosystems, and their welfare is threatened by oil spills, pollution, and the continued effects of historical hunting.
Sea otter welfare is closely linked to ecosystem health. Individual otters affected by oil spills face hypothermia, organ failure, and death as their fur loses insulating capacity. Chronic prey depletion from changing ocean conditions forces otters to spend more energy foraging, increasing physiological stress. The remarkable story of sea otter recovery from near-extinction demonstrates the power of legal protection, but recovered populations remain vulnerable to oil spills, boat strikes, and pollution. Protecting ocean ecosystems protects otter welfare directly.