| Dropped by | ||
|---|---|---|
| Entity | Quantity | Rate |
| Flak Crab Orthocera Sulphurous Skater Trilobite | 1-3 | 33.33% (Tier 2) 6.67% (Tier 3) |
| Anthozoan Crab Belching Coral | 1 | 6.67% |
Corroded Fossils are Hardmode crafting materials that drop from various enemies in the Acid Rain event after the Aquatic Scourge has been defeated. They are used to craft several weapons themed around the Acid Rain.
Crafting[]
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Notes[]
- 5-10 Corroded Fossils can additionally be obtained from Abyssal Crates at a 50% drop chance after completing Tier 2 Acid Rain.
