Zaririn does not attack at Sonic unless he approaches closer to it. It swims simply towards him. On high corridor sections with larger Air Bubbles that the player can use, Zaririns are found lurking on each corners, as they can pop the Air Bubble if the player is far close to them.
Despite the charging attack, the player can simply defeat them by performing the Spin Jump. Like many other Badniks in the game, Drillins do not contain any Animals.
"Zaririn" is a variation of the word "Zarigani" (ザリガニ,"Zarigani"?), meaning crayfish in Japanese.