a slow and shallow stream of water flowing into the ocean separates different kinds of grains (normal light sand and iron-rich black sand). A beautiful example of the general phenomenon called granular segregation
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Place: 8 out of 225 Avg (all users): 6.7377 Avg (commenters): 8.7000 Avg (participants): 6.6932 Avg (non-participants): 6.8529 Views since voting: 1486 Views during voting: 225 Votes: 122 Comments: 19 Favorites: 0
Fascinating post challenge information - I gave it a good score but did not fully appreciate what I was looking at. I thought most of the effect came from post processing which I found over-the-top. I'm very glad many others were more discerning - whether they knew about granular segregation or not. Sincere congratulations on the top ten.