(by the way, he's looking at you!)
I captured this on my travels through Indonesia. I dont know if you ever saw this, but I wondered since a long time how these guys get from A to B. Infact, the sea urchins have small tube feets and are able to walk by hydraulic pressure.
Furthermore, the small orange dot with the black hole in the middle is the mouth AND his anus. Therefore, sea urchins literally are shitting where they eat...
A small excursion in the world of sea urchins. I hope you enjoyed it!
(Sources: All images and videos in this article were taken by me and therefore I own them.)