Video: Detecting strange plants 'dancing'?

The American couple was amazed when they found a strange tree that was able to swing itself like it was dancing while the wind was completely standing.

During a picnic in the suburbs of South Carolina (USA), Jason Freeman and his wife discovered a tree . swinging from left to right very quickly even when it was not windy.

Mr. Freeman tried to hold the leaf to stand still for a moment but the tree continued to "shake" as soon as he let go.

The video was recorded by Freeman by phone and posted on Youtube from April 9 and attracted nearly 300,000 views.