waterwalking

Waterwalking refers to the ability of certain animals to move across the surface of water. This phenomenon is typically achieved through a combination of specialized physical adaptations and behaviors that allow them to overcome the surface tension of water or distribute their weight effectively.

The most common example of waterwalking animals are insects, such as water striders. These creatures have hydrophobic legs that repel water, allowing them to stand and move on the surface without sinking. Their long, slender legs distribute their weight over a large surface area, further reducing the pressure they exert on the water. Some species can also generate tiny ripples that propel them forward.

Certain vertebrates have also evolved the ability to waterwalk. The basilisk lizard, for instance, is known for its remarkable capacity to run across water for short distances. This is accomplished by running at high speeds, creating air pockets beneath their feet with each stride, and quickly lifting their feet before the pockets collapse. They require a running start and can only maintain this feat for a limited time and distance.

Other animals, like some species of frogs and toads, can utilize surface tension to their advantage. By rapidly moving their feet, they can create enough downward force and surface disturbance to stay afloat and propel themselves. The physics behind waterwalking involve a delicate balance of surface tension, weight distribution, and rapid movement, allowing these creatures to exploit a unique ecological niche.