Hahaha guess why I made that topic 
The giant unfinished coralstone structure is hanging there since Quest 5.
The giant unfinished coralstone structure is hanging there since Quest 5.
The giant unfinished coralstone structure is hanging there since Quest 5.
http://forums.terraria.org/index.php?threads/sprites-expanding-on-coral-seashell-and-starfish.12963/