Only occurs if the rock crab is standing in the middle of a 2x2 area next to a wall – if you hit it with a [[Pickaxes|pickaxe]] when its shell has already been broken, you will instead hit and break an imaginary rock that isn't there instead of hitting the monster.
==History==
==History==
{{history|1.0|Introduced.}}
{{history|1.0|Introduced.}}
+
{{History|1.4|Fixed bug that caused striking an unshelled crab with a pickaxe to produce the same sounds and debris as hitting a rock.}}