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The stroke of the foot through the water also generates vortices that aid propulsion. During the transition from drag-based to lift-based propulsion in ducks, leading edge vortices formed on the front of the foot are shed, which creates a flow of water over the foot that likely aids lift production. [1]
The legs of water beetles have little hairs which spread out to catch and move water back in the power stroke, but lay flat as the appendage moves forward in the return stroke. Also, one side of a water beetle leg is wider than the others and is held perpendicular to the motion when pushing backward, but the leg rotates when the limb returns ...
Tube feet (technically podia) are small active tubular projections on the oral face of an echinoderm, such as the arms of a starfish, or the undersides of sea urchins, sand dollars and sea cucumbers; they are more discreet though present on brittle stars, and have only a feeding function in feather stars. They are part of the water vascular ...
The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. [1] The system is composed of canals connecting numerous tube feet. Echinoderms move by alternately contracting muscles that force water into the tube feet, causing them to ...
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A diving horse is an attraction that was popular in North America in the mid-1880s, [1] in which a horse would dive into a pool of water, sometimes from as high as 60 feet. [ 2 ] History
Local firefighters get their feet wet in water rescues. Tribune. Wes Bowers, Lodi News-Sentinel, Calif. November 14, 2023 at 3:52 PM.
In this portrait Kahlo appears lifeless as she lies in a bathtub submerged in water, her legs barely visible but her feet emerge from the water. Her right foot is bleeding and deformed, reflecting what was happening to her body while she suffered in pain. Of the 30-plus operations she endured, most were on her back, right leg and right foot.