Echinometra lucunter reaches 10 cm. Oval-shelled urchin black-purple to red-brown, relatively short stout spines. Remarkable behavior: carves hemispheric cavities in limestone rocks where it shelters perfectly, resisting the strongest waves. Thousands of these pockets on Caribbean rocky flats are its work. From 0 to 15 m. Common species on all wave-exposed tropical Atlantic rocks.
Frequently asked questions
How big is the Rock-boring urchin?
Rock-boring urchin (Echinometra lucunter) reaches 5–10 cm in length.
At what depth can you find the Rock-boring urchin?
Rock-boring urchin is found between 0–15 m deep.
Is the Rock-boring urchin dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Rock-boring urchin?
IUCN status: Least concern (LC).
Where can you find the Rock-boring urchin?
Found in: Caribbean, Macaronesia, Eastern Pacific.