Favosites

Favosites is an extinct genus of tabulate coral characterized by polygonal closely packed corallites (giving it the common name "honeycomb coral"). The walls between corallites are pierced by pores known as mural pores which allowed transfer of nutrients between polyps. Favosites like all coral thrived in warm sunlit seas, forming colorful reefs, feeding by filtering microscopic plankton with their stinging tentacles.