Another World Hides inside Coral Reefs
By Susan Milius
Specialized video equipment snaked into small crevices in coral reefs of the Red
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2001/10/705.jpg?resize=150%2C113&ssl=1)
Sea has revealed a community that rivals the one visible outside.
“The largest habitat is inside,” contends Claudio Richter of the Center for
Tropical Marine Ecology in Bremen, Germany.
For each square meter of ocean bottom covered by the reefs, cavities inside offer
2.4 to 7.5 m&³2; of surface area, Richter and his colleagues calculate. Sponges make