Content
@
0 reply
0 recast
0 reaction
Mohammad 🎩 🍖
@mrtabesh
When a foreign object, such as a grain of sand, is lodged between the carapace and the carapace, the animal secretes layers of the organic material conchiulin horn and calcite or aragonite crystals around the foreign object. A /perl gradually emerges from these concentric layers.
0 reply
0 recast
0 reaction
