Who drills a stone?
I'm sure that each of us who ever walked on the sea shore has seen stones with holes .
Many of these burrows and holes have been made by small marine invertebrate animals such as certain species of bivalved molluscs, polychaete worms, and even sponges.
The most commonly occurring rock-boring molluscs are the Piddocks and some other related species.
The holes are almost circular in shape reaching up to 2 cm in diameter and can occur as a scatter or as dense populations wherever the rock remains wet between the tides.
The piddock occupies the burrow that it has been steadily enlarged throughout its lifetime and it is a “prisoner” within it because the entrance hole is smaller than the width of the adult shell.
Camera: rx10m3
Location: Ecuador coast
Wow. I had no idea that these holes were made by some small marine invertebrate animals. I was always wondering how these rocks can have holes in them and now I know how, so thank you @elviento for sharing this awesome information.
I do like it when you add information like this to go with your photos :)
Steemians don't pay attention to the post quality and quantity of words, so I don't waste to much time for description, photos can say much more :)