A Shadow Vermin is an enemy Link encounters in Twilight Princess. They are small, black creatures that can move on land and on water. Link first fights them on his way to Princess Zelda in the Castle Town Sewers. They make further appearances whenever Link is in the Twilight, and in the Palace of Twilight. They are easily defeated with an attack from Wolf Link or a sword slash from Hylian Link. They're fairly annoying, and are not that much of a threat by themselves. However, groups of them can be quite difficult, so Spin Attacks are the best method of attack.