Black coral skeleton cross-section
By Pacific Coastal and Marine Science Center
2010 (approx.)
![A cross-section of a coral that shows concentric growth rings.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/DeepBCXsecCVact.jpg?itok=EMwYZMLh)
Detailed Description
Cross-sectional disc of black coral skeleton (diameter, 2.4 cm).
Sources/Usage
Public Domain.