Many marine animals can dynamically twist their pectoral fins while swimming. The effects of
such dynamic twisting on the unsteady forces on the fin and its surrounding flow field are yet …

ABSTRACT The Late Oligocene is a period of high penguin diversity, following major
changes in the marine environment at the Eocene/Oligocene boundary and prior to the …

Penguins perform lift-based swimming by flapping their wings. Previous kinematic and
hydrodynamic studies have revealed the basics of wing motion and force generation in …

The bodies of penguins, which swim underwater to forage, are densely covered with
feathers, in which the barbs are oriented in the longitudinal direction. We hypothesize that …

The penguin is the fastest underwater swimmer among the wing-propelled diving birds. To
figure out the mechanism for its excellent swimming, the hydrodynamic performance of a …

Penguins have evolved excellent swimming skills as diving birds, benefiting from their agile
wings. This paper experimentally analyzes the effects of the wing sweepback angle on thrust …

Penguins are the utmost specialized wing-propelled divers as their flapping action is
accountable for the entire underwater propulsion. However, numerical evidence of how …

Birds generate a propulsive force by flapping their wings. They use this propulsive force for
various locomotion styles, such as aerodynamic flight, wing‐paddle swimming and wing …

The flow field around bioinspired magnetic-responsive soft materials that mimic the
symmetry-breaking mechanisms in swimming animals, such as pteropods and manta rays …

Penguins are proficient swimmers, and their survival depends on their ability to catch prey.
The diving behaviour of these fascinating birds should then minimize the associated energy …