A Burrower.

Burrower Bash is a minigame in Metroid Prime Pinball, found exclusively on Tallon Overworld. The goal is to defeat all of the Burrowers. They can be exposed by simply rolling over them, allowing Samus to defeat them by rolling over them again. The game has a time limit of one minute, and time can be added by hitting the sealed off Mode Saucer. In level one, the Burrowers come out of the ground when rolled over or after about fifteen seconds. They never retreat back into the ground. In level two, the Burrowers will pop out of the ground after about ten seconds. After being up for a while, again about ten seconds they will retreat back into the ground. In level three, the Burrowers frequently pop in and out of the ground, with about five-second intervals.