When an air bubble rises in water, what happens to its potential energy /

When an air bubble rise in water, what happens to its potential energy?

An air bubble rises up in water because,

When the height of an object is increased, what happens to its potential energy?

Air bubble in water behaves as

Air bubble in water behaves as

When a spring is compressed or stretched, what happens to its potential energy?

When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero ?

An air bubble in water behaves as ____.