CHICAGO­ —Webbed underarms can turn a sluggish robotic octopus into a speed demon. A squishy membrane connecting the machine’s eight arms helps the bot scoot through water nearly twice as fast as ...

Webbed feet and hands, of course, are a common trait of swimming animals from frogs to whales. In human swimmers, the invisible web of water allows them not to propel themselves faster, but to better ...

The sea cucumber commonly nicknamed the "headless chicken monster" - unique for its webbed swimming fin structures - has been captured swimming at the Loudoun Seamount, in the Pacific Ocean. Recorded ...