Fibonacci in Nature

Here's a lovely video that illustrates how the geometry of nature so often exhibits the Fibonacci sequence:

The mathematical order in nature is astounding and quite inexplicable if it were just produced by blind chance. Everywhere one looks one sees why physicist Sir James Jeans once remarked that God must be a mathematician. Mathematics permeates the architecture of the universe, a fact which would be very odd if there's not behind it all a mathematical mind.