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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)

オオシャコガイ（学名：Tridacna gigas）は、ザルガイ科に分類される二枚貝の一種。インド太平洋の熱帯海域で見られる。現生する二枚貝の中では最大の種であり、殻長は120cmを超え、体重は200kgに達する。寿命も長く、野生での平均寿命は100年を超える。他のシャコガイと混同されることがよくある。 体組織内で藻類を培養することで、急速な成長を可能にしていると考えられている。幼生はプランクトン性だが、成体になると固着性になる。外套膜組織では褐虫藻と共生しており、成体はそこから栄養の大部分を得ている。昼間は殻を開いて外套膜組織を広げ、藻類が光合成に必要な日光を浴びられるようにする。この藻類養殖法は、高効率バイオリアクターのモデルとして研究されている。

Text: Wikipedia, CC BY-SA 4.0.

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Measurements
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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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