The atoms of water closely stick together to produce cohesion, which makes the surface of water form an elastic film. The force supporting this "film" is called surface tension. Some small insects and animals can walk on the water because their weight will not break the film supported by surface tension.

Ants will not sink when they fall on water, because they are light enough.

2. Another reason is that insects use their hairy strides to make spiral eddies in the water, and with the driving force of the eddies, they move forward at a speed of more than 60 inches per second. The motive force of insects walking on the water surface mainly comes from the vortex formed under the water meter. Hundreds of different species are like this. Their sizes range from 1 cm to 20 cm, but they can all walk on water.