Sandsnapper
The Sandsnapper is a round insect that remains buried in the sand around it. When it senses prey overhead, it pops up for a brief instant and snaps up any food it can find. If there is no food, it turns around and burrows back down to set its trap again. It is able to sense prey by leaving the tips of its antennae just barely above the surface. If you look carefully for a pair of black specks in the sand, you know to stay away. The safe method is to throw Purple Pikmin close but not too close to the specks. It'll stun the creature and awkwardly push it out of the ground where it can be beaten before it burrows again. Alternately, you can have a Pikmin swiftly dodge the attack and then beat it before it can retreat. This is tougher, though.