Helmkäfer

It slides across the floor after Link. The sword does hurt it, but both it and Link bounce far apart. Where it shows up there is often a pit. Think about which way you will bounce before you attack, or you will fall in. Turn the bounce around and knock it into the pit instead, and the fight gets easy.

A bouncy, springy jellyfish. Hit it and the blow bounces back at you, so better not attack where the footing is shaky.