Certain bugs “walk on water”. The most popular of these water-walkers is the water strider (sometimes called the “Jesus Bug” because of its ability to walk on water like its Creator did). However, other creatures, such as some spiders and other insects, can do the same. How is it possible for any creature to walk on water? Surface tension and cohesion are the two key factors.

Cohesion Causing Surface Tension

Water, as you know, is made of trillions of trillions of water molecules that cluster together. However, a water molecule, when on the surface of water, is attracted in many different directions. But, the water molecules that are not on the surface are attracted in many more different areas.

This gives the molecules on the surface more strength to attract to less molecules and, thus, build a stronger foundation for the edge of water. The water molecules below are like too little butter spread over too much bread; their powers are weaker because they are spread out between a lot of molecules.

This strong attraction between water molecules on the surface is called cohesion. This cohesion makes water form into drops. Another example would be like if you spilled some water on the table. The water could be above the surface of the table.

Water is self-leveling. Meaning, no matter how up-and-down a hole is, if water is in it, the surface of the water will be flat. But, because of surface tension and cohesion, which makes a “skin” around the water, it will allow it to puddle up on a flat surface.

Since we have talked about freezing water and such I thought I would mention that surface tension is higher when the water is colder. This is because the forces between the molecules get stronger. Eventually, the surface tension gets so tough that it forms ice.

This cohesion and surface tension makes water all that more amazing, and we can plainly see the reflection of God’s genius in the water we drink.