Underwater circular features off the coast of Greece are seen in the image below.  The features are approximately 220 feet in diameter and have similar diameters.

Circular Features: Greece: Site 1

The image below has been color enhanced.

Just to the North of the circular features, rectlinear features can be seen that are approximately 100 feet in width.

Circular Features: Greece: Site 2

More circular features approximately 160 feet in diameter.  A linear feature can be seen going from North to South in the color enhanced image below:

Circular Features: Greece: Site 3

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