Wooper

Gold / LeafGreen: This POKéMON lives in cold water. It will leave the water to search for food when it gets cold outside.

Silver: When it walks a­ round on the ground, it coats its body with a slimy, poisonous film.

Crystal: A mucous membrane covers its body. Touching it barehanded will cause a shooting pain.

Ruby / Sapphire: WOOPER usually lives in water. However, it occasionally comes out onto land in search of food. On land, it coats its body with a gooey, toxic film.

Emerald: WOOPER usually live in water but come out onto land seeking food occasionally. On land, they coat their bodies with a gooey, toxic film.

FireRed / SoulSilver: When it walks around on the ground, it coats its body with a slimy, poisonous film.

Diamond: It lives in cold water, half burying itself in mud at the bottom to sleep.

Pearl / Y: When the temperature cools in the evening, they emerge from water to seek food along the shore.

Platinum +5: When walking on land, it covers its body with a poisonous film that keeps its skin from dehydrating.

HeartGold +2: This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside.

Omega Ruby / Alpha Sapphire: Wooper usually lives in water. However, it occasionally comes out onto land in search of food. On land, it coats its body with a gooey, toxic film.