Giant Clam
Map icon
| Type | Miniboss – Aquatic |
|---|---|
| Environment | Sunken Sea |
| Damage | 0 (Contact) Teleport Slams:  50 / 100  / 135  (Pre-Hardmode) 100 / 200 / 270 (Hardmode)70 / 112 / 69 (Psychic Pearls) |
| Max Life | 1250 / 2500 / 2810 (Pre-Hardmode) 7500 / 15000 / 16875 (Hardmode) |
| Defense | 9999 (closed) 10 (open in Pre-Hardmode) 35 (open in Hardmode) |
| DR | 30% |
| KB Resist | 100% |
| Inflicts debuff |  Clamity100% chance |
| Debuff duration | Infinite (While aggressive) |
| Debuff tooltip | The clams have been angered! |
| Immune to |    |
Cold  | - |
|---|---|
Water  | Resistant |
Sickness  | Vulnerable |
Electricity  | Vulnerable |
Heat  | Resistant |
| Coins | 1  (Pre-Hardmode) 8 (Hardmode) |
|---|
- Item (Quantity)Rate
Navystone (30-40)100%
Mollusk Husk(In Hardmode) (25-30)100%- 50%
- 25%
- 10%
- 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%- 33.33%
- 33.33%
- 10%
Giant Clam Relic(In Master or Revengeance Mode only)100%
/ 100%
“A specimen which has developed a grand size, and inexplicably, impressive psychic abilities.
The Giant Clam is a mini boss that rarely spawns in the Sunken Sea after defeating the Desert Scourge and is generally the first mini boss that the player will encounter. It receives a huge buff during Hardmode.
It will drop the Sea King if he is not already present in the world and the Desert Scourge has been defeated already. Additionally, Prism Crates will include Giant Clam's weapons in Hardmode after it has been defeated.
It can be detected with the Lifeform Analyzer.
Behavior
It is initially passive and closed up, but once the player hits it 5 times, the player receives the Clamity debuff, which increases 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.
Summons
| Image | Name |
|---|---|
 |
Clam |
Notes
- In the Get fixed boi seed, the Giant Clam is renamed to Clamitas, or Supreme Clamitas in Hardmode, and it creates some Calamitas Clone-esque bullet hell patterns in addition to its normal attacks.
Trivia
- The
Bestiary entry for the Giant Clam: "Clams slowly crystalise ambient magic around themselves into pearls, and as they grow larger, so too do their pearls. Upon growing to their full size, they are classified as Giant Clams, and gain the ability to use the magic stored in their pearls to some degree."
- The Clamity debuff name is a portmanteau of the word "clam" and the mod's title, "Calamity."
- The Giant Clam has a Draedon's Log entry dedicated to it that can be found in the Sunken Sea Bio-center Lab.
- If the Boss Checklist Mod is installed, its unique despawn message will be "The Giant Clam returns hiding in its grotto."
History
- 2.0.4.002: Fixed it keeping its high spawn defense until after hiding in its shell once.
- 2.0.4.001:
- Now has 25% less health and 10% less damage in Master Mode.
- No longer deals 20% / 32%
more damage on contact, or 15% / 24% more damage with its pearls. - Nerfed pearl burst damage in Master Mode from 84 to 69 .
- No longer deals contact damage while not doing teleport slams.
- 2.0.2.002: Now properly displays vanilla debuff colors and Hunter Potion effects.
- 2.0.2.001:
- Can now drop Pink Pearls, Black Pearls and White Pearls.
- Now drops its Relic at 100% chance instead of 25%.
- 2.0.1.002: Now drops Amidias' Pendant and Giant Pearl regardless of condition.
- 2.0.1.001: Now drops 30-40 Navystone instead of 25-35, and now drops 25-30 Mollusk Husks instead of 6-11.
- 1.5.1.001: Now vulnerable to electricity and sickness debuffs, but resistant to water and heat debuffs.
- 1.5.0.003: Now has a chance to drop more than one of its weapons at once.
- 1.5.0.001: Decreased minimum coin drop amount in Hardmode from 10 to 8 .
- 1.4.5.002: Increased spawn rate.
- 1.4.3.002:
- No longer immune to every debuff except Ichor and Cursed Inferno.
- Now only immune to Eutrophication, Galvanic Corrosion, Glacial State, Pearl Aura, Slow, Temporal Sadness, Tesla Freeze, Time Distortion, and Webbed.
- 1.4.3.001:
- Now has a unique minimap icon.
- Nerfed contact damage from 50 / 100 / 125 / 143 to 50 / 100 / 120 / 132 .
- Nerfed pearl damage from 70 / 112 / 140 / 161 to 70 / 112 / 128 / 138 .
- Now only drops Amidias' Pendant and Giant Pearl after defeating Desert Scourge.
- Now drops Amidias' Pendant in all difficulties, and reduced drop chance from 50% to 33.33%.
- 1.4.2.105: Can no longer spawn until after defeating Desert Scourge.
- 1.4.2.103: Nerfed pearl burst damage from 150 / 200 to 70 / 112 , and pearl rain damage from 100 / 120 to 70 / 112 .
- 1.4.2.102:
- Now immune to Lava.
- Fixed its hitbox.
- 1.4.2.101:
- Now has 30% damage reduction.
- Can no longer despawn if the player is at least somewhat close to it.
- Now immune to all debuffs except for Ichor and Cursed Inferno.
- Shell rims now glow when closed.
- Now drops 25-35 Navystone.
- 1.4.2.002:
- Doubled the spawn rate.
- Resprited the Clamity debuff.
- Fixed it not appearing on the Boss Health Bar.
- Fixed it not being able to drop Shellfish Staff.
- 1.4.2.001: Introduced.
