Crush Depth

Crush Depth is a debuff inflicted by most Abyss enemies and weapons, as well as the Depth Crusher and its upgrades, the Abyss Blade and Neptune's Bounty. It is also inflicted by Biome Blade and its upgrade while the player is in the Ocean. If inflicted on an enemy, they lose 30 health per second in Pre-Hardmode, and 200 health per second in Hardmode. If inflicted on the player, they instead lose 9 health per second. If the player has the Depths Charm equipped, they will only lose 4.5 health per second.

Additionally, if a player is inflicted with Crush Depth while in the Abyss, their breath meter will drain more quickly.

Crush Depth has its damage reduced by the amount of defense its target has. For the player, 5% of their defense (rounded down to the nearest integer) is subtracted from the health lost per second. For enemies, 500% of their defense is subtracted from the health lost per second.