The Metallic Green Branching Hammer Coral, (Euphyllia parancora) is a large polyp stony (LPS) hard coral with long, fleshy tentacles with tips shaped like hammers growing from its skeleton that sway in the water back and fourth. They go by the name Hammer Coral or Anchor Coral. The Hammer Coral, is also known as the Anchor Coral, features hammer or anchor shaped tentacles.