Red Coral For Sale in a Beijing Market (IMAGE) SeaWeb Caption Large colonies with complex branching structures, as seen here on display, are now rarely found. Scientists say that Coralliidae's population structure has shifted from providing a forest-like habitat to one resembling a grass plain. Credit Devin Harvey, Marine Photobank Usage Restrictions Credit must be given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.