You see a rum barrel.
Notes
Appears during the fight against Ratmiral Blackwhiskers of A Pirate's Tail Quest.
Abilities
Unknown.
Damage Taken From Elements
Physical 
Death 
Holy 
Ice 
Fire
Energy
Earth
Drown
Location
Strategy
The Rum Barrel can be destroyed by forcing a player's summon, such as a Demon Skeleton, to walk over it.