shell reef

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Useful and educational original caption:

I had honestly never seen a turtle eating before. This beautiful Hawksbill Turtle uses his ‘beak’ shaped mouth to get in the crevices of the coral reef. Although it looks as though he is just eating the hard coral here! Hawksbills are unfortunately on the critically endangered list. Their greatest threat remains the harvesting of their beautiful shell for jewelry.

The Bahamas from space.

This group of 700 atolls and keys in the Atlantic are the tips of great banks poking out above the ocean surface. The bedrock is fossil coral, with lagoonal oolitic limestone derived from the erosion and precipitation of reefs and shells bedded above it. The highest point is only 63 metres above sea level. Only one river exists in the entire archipelago. The photo was snapped from the ISS by NASA astronaut Karen Nyberg.

Loz

There’s only so much you can do with brachiopods… These guys, however, are pretty neat and actually created underwater cliffs from piling up on each other, some discovered mounds have even been miles across. Zebra Mussels ain’t got nothing on Kirkidium knightii.

Oops I lied! We found out they don’t actually build cliffs, though they DO pile up on each other, just in a flatter formation. So this illu gets to be scrapped. Dang.