Saltvandsforum.dk

Lidt info. om Sort koraller. (Dybhavskoral)

http://www.waikikiaquarium.org/experien ... ack-coral/" onclick="window.open(this.href);return false;

http://oceanexplorer.noaa.gov/explorati ... coral.html" onclick="window.open(this.href);return false;

https://en.wikipedia.org/wiki/Black_coral" onclick="window.open(this.href);return false;