What behavioral or physical adaptations help the river otters survive?

River otters possess several adaptations that enhance their survival in aquatic environments. Physically, they have streamlined bodies and webbed feet, which allow for efficient swimming and agility in water. Behaviorally, they are social animals often living in groups, which aids in hunting and protection from predators. Their thick fur provides insulation against cold water, while their keen sense of smell and whiskers help them locate prey underwater.