Google's Shout out to Bahrain National Day

Today (or possibly tomorrow - I'm not quite sure) is the 40th anniversary of Bahrain's break from the UK as a "protectorate".   But I was surprised to see that Google had a "Google Doodle" on its home page marking National Day.  Even more surprisingly, its visible on the main Google homepage (as opposed to just the Google Bahrain homepage).

I really like the picture.  Pearl diving is, historically, what Bahrain was known for.  Here are a couple of tidbits about diving:

• Divers would often stay out for days, even weeks at a time, searching for pearls.  They could stay out so long because they had access to fresh water. 
• Fresh water streams ran through the salt-water at the floor of the ocean, and divers could dive down and refill their water casks with fresh water without docking. (those fresh water streams no longer exist due to land reclamation). 
• Pearls were able to be bought and sold in Bahrain as traders went from modern day Kuwait, down through the gulf and on to India.