Damp is an ability. When an active Pokémon is out in battle no Pokémon can use the moves Explosion or Selfdestruct. As the name suggests, all the Pokémon with this ability are Water type excluding PARAS and PARASECT.

Pokémon

Pokédex	Pokémon	Sprite	Type	Obtained
#046	Paras			Dream World
#047	Parasect			Dream World
#054	Psyduck			Natural
#055	Golduck			Natural
#060	Poliwag			Natural
#061	Poliwhirl			Natural
#062	Poliwrath			Natural
#116	Horsea			Dream World
#117	Seadra			Dream World
#186	Politoed			Natural
#194	Wooper			Natural
#195	Quagsire			Natural
#230	Kingdra			Dream World
#258	Mudkip			Dream World
#259	Marshtomp			Dream World
#260	Swampert			Dream World
#592	Frillish			Dream World
#593	Jellicent			Dream World