Fin and flipper locomotion
Videos
Fin and flipper locomotion occurs mostly in aquatic locomotion, of nektonic animals with paired appendages, more specifically aquatic vertebrates and most coleoids. These appendages have a large wette
A species of mudskipper (Periophthalmus gracilis)
Mudskippers in The Gambia
Loggerhead sea turtle crawling
Antennarius striatus
Certain species of fish and birds are able to locomote in both air and water, two fluid media with very different properties. A fluid is a particular phase of matter that deforms under shear stresses
Penguins swim by "flying" beneath the surface of the water.
Flying fish use their pectoral fins to glide above the water's surface.
Boxfish are the classic biological example of MPF swimming because they are not well streamlined and use primarily their pectoral fins for thrust production.
Puffins both swim and fly using lift produced by their wings.