Putrid Serpent

The Putrid Serpent is a Hardmode enemy that can be found within the Aquatic Depths biome. It attacks by releasing Putrid Spit at the player that inflicts the Liquefied debuff, decreasing defense, movement and melee speed. After attacking three times, it will burrow into the depths floor and resurface in a nearby location as long as it's within the Aquatic Depths, otherwise it will remain stationary.