How do platypuses move in water and on land?

A platypus swims by paddling with its four feet, and using its thick tail as a rudder. It has retractable webbing on its feet to assist it with speed and for hundreds of dives it must make daily in order to find food. It closes its eyes and ears as it swims, and locates food by electroreceptors in its bill as it forages around on the river or creek floor.