Sea otters are keystone species whose recovery from near-extinction has transformed coastal ecosystems, but remaining populations face ongoing threats with direct welfare consequences.
Sea otters are charismatic and ecologically critical animals whose welfare intersects closely with conservation outcomes. Oil spills cause acute, severe suffering — matted fur leads to hypothermia, and otters desperately groom themselves, ingesting toxic oil. Entanglement in crab pots and gillnets causes drowning or injury. Disease outbreaks including Toxoplasma gondii (transmitted via cat faeces entering waterways) have killed significant numbers along the California coast. Rehabilitation programmes are welfare-intensive, expensive, and not always successful — with wild individuals, welfare must be weighed against the costs and risks of intervention.