Box Jellyfish

The Box Jellyfish is a Pre-Hardmode enemy that spawns in the Ocean and the 1st layer of the Abyss. It will remain passive until the player gets too close, it will then attempt to attack the player by swimming towards them.

Trivia

 * The Box Jellyfish acts similarly to its real-life counterpart; they both remain passive until they detect something nearby that may be edible.
 * Despite being an enemy that spawns in the Abyss, it is unable to drop the Halibut Cannon.