<P> Prey is captured with a quick lunge from ambush , or more rarely , after a sustained chase . River otters can remain underwater for nearly 4 minutes , swim at speeds approaching 11 km / h ( 6.8 mph ) , dive to depths nearing 20 m ( 22 yd ) , and travel up to 400 m ( 440 yd ) while underwater . Several river otters may even cooperate while fishing . Small fish are eaten at the surface , but larger ones are taken to the shore to be consumed . Live fish are typically eaten from the head . </P>
<P> Prey is captured with a quick lunge from ambush , or more rarely , after a sustained chase . River otters can remain underwater for nearly 4 minutes , swim at speeds approaching 11 km / h ( 6.8 mph ) , dive to depths nearing 20 m ( 22 yd ) , and travel up to 400 m ( 440 yd ) while underwater . Several river otters may even cooperate while fishing . Small fish are eaten at the surface , but larger ones are taken to the shore to be consumed . Live fish are typically eaten from the head . </P>
how long can a river otter stay under water
how long can a river otter stay under water
4 minutes
4 minutes