Reef Tools Help

Help


 

Reef Id
Aquarium Supply Info

Articles tagged with Sea Urchin

National Geographic News published a great article on the scientific reasoning for the never diminishing sharpness of sea urchin’s rock-crushing chompers. Researches used high-resolution x-ray imaging to discover that the urchin’s teeth are a combination of two types of calcite crystals that overlap in a crosswise pattern. The teeth peel away as they become weak […]

© 2012 Reef Tools. All rights reserved.