Vortex rings.....Awesome Vid!!

Hi All,
I stumbled upon this video this morning and thought it was to cool not to share.
Not sure if the explanation in the video description is accurate or not.

Love the dolphins!!



Enjoy,
Dave

Love the dolphin's also,

Those vortex rings are so cool,

Its shows a real level of intelligence on the dolphin's part

It would be great if someone could finally communicate with dolphins and whales,

Just imagine what they have seen, in the depths of the sea's.

Dolphins are awesome...
pity those ones are all stuck in captivity though.

The rings the Dolphins produce are awesome, the must not contain much air though.
So cool