The Sea Mine is an obstacle found in the Shipwreck Sea Terrain and the UFO Terrain. It explodes upon contact with a boat or the player and can destroy seats, causing the players being ejected out of the seat. The Sea Mine can also destroy Corroded Metal blocks easily. The UFO Terrain's Sea mine is called the Crisis Mine. It also will destroy the player's accessories if close enough. However, if the player touches it, it does not explode, instead, it destroys the player's body parts and it is immune to cannon balls.