flippers or fins worn on the feet to increase swimming speed, typically used by divers

(bird species of China) Asian dowitcher; Limnodromus semipalmatus

(bird species) red phalarope (Phalaropus fulicarius)

(bird species of China) red-necked phalarope (Phalaropus lobatus)

To swim with fins or flippers; the sport of finswimming, typically involving a snorkel and mask

a webbed foot, as seen on water birds; palmate foot

A steamship propelled by a paddle wheel on the side or rear; widely used in the early steam era before being replaced by propellers.