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An amazing video shows two bubble rings meeting underwater.

The pair is created by a scuba diver off camera who then records them as they gently float towards the surface.

When they eventually meet, the bubbles touch and join together to form a single, larger bubble ring.

WHY DO BUBBLES MERGE?

When two bubbles meet, they share their volumes to form a single bubble.

The pair will attempt to form the smallest surface area possible.

When two bubbles merge, they typically do not become one enclosed sphere.

Instead, they stick together and adjust their shapes in order maximise overall strength. 

The ring reverberates for a few seconds before breaking apart in the water.

A bubble ring is an underwater vortex created when a pocket of air occupies the centre of the vortex.

They are actually made of two different rings, one inside the other, spinning in the same direction.

The outer ring is made of water, and the inner one is made of air. 

The ring and nearby water spins as it travels through the water, pushing it in a certain direction.

This has been compared to the way a bracelet spins when it rolls down somebody’s arm.

An amazing video shows two bubble rings meeting underwater. The pair is created by a scuba diver off camera who then records them as they gently float towards the surface of the water

An amazing video shows two bubble rings meeting underwater. The pair is created by a scuba diver off camera who then records them as they gently float towards the surface of the water

When they eventually meet, the bubbles touch and join together to form a single, larger bubble ring

When they eventually meet, the bubbles touch and join together to form a single, larger bubble ring

In the video, the rings combine the moment they touch – a common phenomenon seen in bubbles.

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Bubbles always try to minimise their surface area, so two bubbles will merge to share a common wall. 

Bubble rings are often playfully created by dolphins using air from their blow holes.

According to Leandro Stanzani, president of Oltremare aquatic park in Italy, the creatures blow the bubbles to amuse themselves.

The ring reverberates for a few seconds before breaking apart in the water. A bubble ring is an underwater vortex created when a pocket of air occupies the centre of the vortex

The ring reverberates for a few seconds before breaking apart in the water. A bubble ring is an underwater vortex created when a pocket of air occupies the centre of the vortex

He said: ‘Dolphins are very complex and social animals, they like to play alone, with other dolphins or indeed with whatever appears between their fins.

‘When they don’t have toys available they create their own. Air bubbles and air rings are their self-made toys.

‘They create the shapes by blowing air rapidly under the surface of the water.

‘Sometimes they form rings using the vortex created by their fast swim by injecting air into it.’



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