What is a coral ? Wallpaper 137 Fungia sp ((en) Disk Coral, Plate Coral, (de) Kniescheibenkoralle)

Fungia sp

Fungia sp (en) Disk Coral, Plate Coral, (de) Kniescheibenkoralle

Camera

Nikon D5100

Lens

AF Micro-Nikkor 200mm f/4D IF-ED