Lanmola

Lanmolas are large sand-dwelling centipede-like monsters.

The Legend of Zelda
They are found in pairs in Death Mountain and come in orange and blue, with the speed being different. They move in cardinal directions, often several tiles at a time. The segments must be defeated one at a time to destroy them.

The Legend of Zelda: A Link to the Past
Three appear as the boss of the Desert Palace, and leap from under the sand to attack, and can be attacked anywhere on the body. They later appear again in Ganon's Tower. Moldorms from the first game (here called Swamolas) take a similar role in the Swamp of Evil in the dark world, but are much shorter.

The Legend of Zelda: Link's Awakening
One appears as a mini-boss in Yarna Desert, acting like the three in the previous game. However, the sand is quicksand, and has a hole in the middle. If Link falls into this hole before the battle is over, he will have to start over. Once the battle is over, the Angler Key will drop into the hole.