Its flotation sac developed as a result of pursuing aquatic prey. It can double as a rubber raft.
Stats
Attack: 105
Defense: 55
HP: 85
Sp. Attack: 85
Sp. Defense: 50
Speed: 115
Profile
Type: Water,
Ability: Swift Swim, Water Veil,
Egg: Water 1, Field,
Gender: 50:50
Weight: 33.5 kg
Height: 1.1 m