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Giant clam black&white komodo🐚

Photo: Nhobgood Nick Hobgood · CC BY-SA 3.0

SpeciesCardiidaCardiidae
Molluscs

🐚Giant clam

Tridacna gigas (Linnaeus, 1758)

大硨磲（学名：Tridacna gigas），又称巨蚌、巨硨磲蛤、庫氏硨磲，是最大型的雙殼貝類動物。棲息於南太平洋和印度洋的珊瑚礁。最重可達200公斤，殼寬可達1.2公尺。 在傳說中，巨蚌常被誤解為“殺人蚌”或“食人蚌”，《美國海軍潛水手冊》甚至曾經詳述如果被巨蚌所夾住要如何切斷其內收肌脫困。然而事實上巨蚌非侵略性肉食性貝類。巨蚌的確有能力合起雙殼，但此為防禦性行為。因受刺激關閉雙殼，牠必須先噴水，排出濾食中的海水再閉合，非陷阱式的迅速夾合。

Text: Wikipedia, CC BY-SA 4.0.

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Measurements
3
vs you
≈ 8.1× your weight
Also called
Tridacna gigas
Conservation status
CRCritically endangered

IUCN Red List assessment, 2024.

Population trendDecreasing
Key measurements
Body mass
500 kg
Body length
not recorded
Shoulder height
not recorded
Top speed
not recorded
Bite force
not recorded
Maximum lifespan
not recorded
All measurements ↓
Facts and figures

Everything we know about the Giant clam

Typical adult figures. Where a value is an estimate rather than a measurement, it says so.

Body mass
500 kgmaximum recorded
SeaLifeBase
Details ↓

SeaLifeBase populates Weight independently of Length; the two are not guaranteed to describe the same individual. Verify before publishing.

Source: SeaLifeBase · v25.04 · CC BY-NC 4.0

Shell length
0.8 mtypical adult, shell length
SeaLifeBase
Other figures ↓

Source: SeaLifeBase · v25.04 · CC BY-NC 4.0

Figures vary

  • 1.37 mSeaLifeBasev25.04
Volume l
500 Laverage
Details ↓

Body mass at ~1.0 kg/L, the density of vertebrate tissue.

average = a mean across sexes or species in a group.

Not recorded for Giant clam yet: body length, shoulder height, top speed, bite force, maximum lifespan.

Where it sits

Family tree

  1. kingdomAnimalia
  2. ›phylumMollusca
  3. ›classBivalvia
  4. ›orderCardiida
  5. ›familyCardiidae
  6. ›genusTridacna
  7. ›speciesTridacna gigas
Full lineage
  1. phylumMolluscs · Mollusca
  2. classClams, mussels & oysters · Bivalvia
  3. subfamilyTridacninae
  4. genusTridacna
All 10 branches ↓
  1. kingdomMetazoa
  2. phylumMolluscs · Mollusca
  3. classClams, mussels & oysters · Bivalvia
  4. subclassHeterodonta
  5. superorderImparidentia
  6. orderCardiida
  7. superfamilyCardioidea
  8. familyCardiidae
  9. subfamilyTridacninae
  10. genusTridacna
More

More about the Giant clam

In other languages
Tridacne géant (fr), 大硨磲 (zh), Tridacna gigas (pt), Przydacznia olbrzymia (pl), Гигантская треуголка (ru), Tridacna gigas (es) … and 23 more languages
More photos
Giant clam black&white komodoClam (23491412989)
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