Maerl

Calcified remains of Maerl at Coral Beach on the Isle of Skye

Maerl is a sand or gravel that consists of more than 50 percent branched, living or dead red algae ( Corallinaceae ) and occurs shallow marine and near the coast.

Individual evidence

1. ↑ Maerl - Encyclopedia of Earth Sciences. Retrieved July 5, 2016 .