| Type | Enemy |
|---|---|
| Environment | Sunken Sea |
| AI Type | Giant Clam AI |
| Damage | 50 / 100 / 125 (pre-Hardmode) 100 / 200 / 250 (Hardmode) |
| Max Life | 1,250 / 2,500 (pre-Hardmode) 7,500 / 15,000 (Hardmode) |
| Defense | 9999 (closed) 10 (open in pre-Hardmode) 35 (open in Hardmode) |
| KB Resist | 100% |
| Inflicts debuff |  Clamity100% chance |
| Debuff duration | Infinite (While aggressive) |
| Debuff tooltip | The clams have been angered! |
| Banner |  Giant Clam Banner |
| Coins | 1  (pre-Hardmode) 10 (Hardmode) |
|---|
- Item (Quantity)Rate
- 33%
Mollusk Husk(In Hardmode) (6-11)50%- One of the following four items will be dropped if the player is in Hardmode
- 25%
- Clamor Rifle(In Hardmode only)25%
- Shellfish Staff(In Hardmode only)25%
- Clam Crusher(In Hardmode only)25%
- Amidias' Pendant(In Revengeance only)50%
The Giant Clam is a mini boss that rarely spawns in the Sunken Sea, and receives a huge buff during Hardmode. It is initially passive and closed up, but once the player hits it 5 times, the player receives the Clamity debuff, which boosts the spawn rate of Clams and making them aggressive while reducing the other enemies' spawn rate to 0, and the Giant Clam becomes aggressive.
While mostly immobile, it can perform one of 2 moves every 4 seconds. Its most common move is to teleport over the player's head and fall down on them. The other, less common move is to close itself up for a short while, then spawn 3 more Clams.
In Hardmode, it gains 2 new attacks which have a timer of 3 seconds, unrelated to its primary attacks, on top of making its tele-stomp attack faster. Its first attack is to shoot a ring of 6 psychic pearls along with another faster pearl that is always aimed towards the player. Its second attack is to summon a rain of 11 psychic pearls upon the player, which have a gap between them.
It will drop the Sea King if he is not already present in the world and Desert Scourge has been defeated already.
It can be detected with the Lifeform Analyzer.
Trivia
- The Clamity debuff name is a portmanteau of the word "clam" and the mod's title, "Calamity."
