Casual Friday — blowing bubbles

I don’t recall how I first ran across this, but via some tortuous path eventually ending at the Riparian Rap blog, I found an amazing video clip showing a trick that dolphins do at play:

If you’d like to know more about dolphins and their play with bubble rings, there’s a published paper describing the behavior’s implications w.r.t. dolphin’s cognitive abilities here. Meanwhile, if you aren’t put off by a little math, Deep Ocean Diving has a nice page up about the physics of bubble rings.

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