Froak

The are a pufferfish-like enemy in Skyward Sword.

Characteristics
Fugu appear to float around aimlessly, damaging Link with their spikes if they collide with him.

Variations
There are multiple variations of Fugu:

Water Fugu
Water Fugu can be found in the Skyview Temple in Skyward Sword.

Sand Fugu
Sand Fugu can be found within the Lanayru Desert in Skyward Sword. They can be easily dispatched by blowing them into a wall with the Gust Bellow.