Blipper

Blipper is a fish-like enemy that wears goggles and appears in most of Kirby's games. Blippers are similar to Waddle Dee on land - very common, very weak enemies, but just happen to be underwater instead. Some just swim around back and forth, some try to chase Kirby, and others will jump out of the water in an attempt to hit him. Being fish, Blippers just flop around helplessly if they end up on land.

Other Games
Blipper appears in Super Smash Bros. Brawl as one of the stickers players can earn. The Blipper sticker raises a character's swim time by 20 allowing them to swim for longer periods without drowning. It uses Blipper's design from Squeak Squad. In Kirby Mass Attack, purple-colored Blippers exist. These are capable of producing electric shocks.

Trivia

 * A similar enemy, known as Blurp, appears in Super Mario World.