Dutch Diving Helmets, working under water at Gaia park.mp4

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Hi Kees,

It really looks easy to work with the Dutch Diving Helmet in a aqarium and clean the glasses.

It's mutch quicker to clean the durty windows with the helmet otherwise you need that heavy dive-equipment and bumping to the walls with your scubatank.

Any zoo must have this helmet and it is nicer for the visitors to look you cleaning up the windows.