This rock looks like it has been hollowed out by flowing water, but I think it's one of those rocks that is eaten by bacteria.
Metering Mode: center weight
Exposure time: 0.017 s (1/60)
Aperture: f/2.8
Exposure bias: 1.00
Focal length: 7.4mm (35mm equivalent: 37mm)
Flash: Yes (auto)
File size: 1711041 bytes
Camera maker: Canon
Camera model: Canon PowerShot S410
Resolution: 2272 x 1512
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