Crab Eyes
Crab Eyes Oculorum Cancri ‘Crab’s Eyes’ are small balls of calcium stored by several species of freshwater crayfish, such as Astucus fluvialilis, to repair their shells. They are most prevalent before the Crayfish renew their shells. ‘Crabs-eyes are of different sizes, hemispherical or convex on one side, flat or concave on the other, of a…

