A river otter may swim at speeds up to 9.7 km/hr (6 mph), and remain submerged for several minutes at a time, diving 13.7 m (45 ft) or covering 402 m (1320 ft) while submerged. Although river otters ...

The playful North American river otter is equally at home in the water and on land. It makes its home in a burrow near the water's edge, and can thrive in river, lake, swamp, or estuary ecosystems.