Elad Hershkowitz, a zookeeper at the Zoological Center in Tel Aviv, documented the water - drinking habits lions, giraffes, lemurs, elephants, pelicans and ostriches by stationing a GoPro to the bottom of a water trough. (businessinsider.com)
The bagels should sink to the bottom of the water. (sourdoughhome.com)
you will see sand grains at the bottom of your water. (theurbanbaker.com)