THE ANIMAL FILES

Giant squid

Architeuthis dux

Two long tentacles catch; eight arms bring the catch to a beak.

The giant squid is a deep-sea animal whose overall length includes much more than its mantle. Two long feeding tentacles extend beyond eight arms, with sucker-bearing clubs at their ends.[1][3]

Follow the evidence ↓
Giant squid
Image: Stefan Kühn · Commons · CC BY-SA 3.0
Appendages
Eight arms and two longer feeding tentacles[3]
Food
Fish and other squid[1][4]
Propulsion
Water expelled through a funnel[1][4]

Reach, grip, bring inward

The tentacular clubs grip prey with suckers. The catch is then brought toward the shorter arms and the central beak. This division of work separates reaching from holding and processing.[3][4]

The mantle powers a water jet

Water enters the mantle cavity and is expelled through the funnel. The resulting jet pushes the animal in the opposite direction, while fins also contribute to movement. Feeding appendages are not propellers.[1][4]

Traces of a deep-sea food web

Fish and squid occur in its diet, while sperm whales are known predators. Beaks recovered from whale stomachs and specimens from nets have helped build knowledge where direct observations remain difficult.[1]

A COMMON MIX-UP

Is the whole measured length a solid bulky torso?

No. Long arms and especially feeding tentacles contribute substantially to total length.[1]

TRY A LITTLE REASONING

Why separate mantle length from total length?

Reveal the explanation

Total length includes extensible appendages, so it describes a different dimension from the central body alone.[1]

Sources & editorial notes

Adapted and translated from the cited Wikipedia revisions, with source-linked reasoning. Image credit and licence are listed separately above.

Adapted and translated from Wikipedia contributors; exact revisions are linked below. CC BY-SA 4.0

  1. Wikipedia contributors — Giant squid (fixed revision; adapted and translated)
  2. NCBI Taxonomy — Architeuthis dux (identity and classification)
  3. Smithsonian Ocean — Giant squid feeding anatomy
  4. American Museum of Natural History — Giant squid feeding and propulsion

Last fact check:

One discovery leads to another

Common cuttlefishEight holding arms, two reaching tentacles.Sepia officinalis ↗Vampire squidThe “vampire” collects sinking scraps instead of drinking blood.Vampyroteuthis infernalis ↗Greater blue-ringed octopusBright blue can be revealed by opening folds in the skin.Hapalochlaena lunulata ↗