Dumbo octopus
The dumbo octopus is a deep-sea animal belonging to the genus Grimpoteuthis, recognised for its webbed arms and distinctive ear-like fins used for swimming.
Also known as: Grimpoteuthis, dumbo octopod
How big is it?
30 cm long
Also 11.81 in
Defined arm-tip-to-fin-tip length · defined specimen
Typical recorded range: 20 cm to 50 cm.
A little perspective
About the same scale as A4 paper.
A4 paper: A4 paper is an ISO 216 paper format commonly used internationally for letters, forms and printed documents.
Measurements, assumptions & sources +
Dumbo octopus
A defined 30 cm, 1 kg dumbo octopus (Grimpoteuthis-type). Species and specimens vary; the complete span includes the webbed arms and paired ear-like fins, with no claim that this is a maximum.
The marked defined arm-tip-to-fin-tip length is calibrated. Unmeasured illustration details are representative.
A4 paper
A4 is 210 × 297 mm. Its 0.06237 m² area is calculated from those nominal sides. The marked span uses the exact measurement; the generated paper texture and outline are illustrative.
University of Cambridge — ISO paper sizes
The marked length is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 30 cm
For comparison, this page uses defined arm-tip-to-fin-tip length. This is labelled defined specimen: an explicit comparison model rather than a claim that every example has the same value. The recorded range is 20 cm to 50 cm.
A defined 30 cm, 1 kg dumbo octopus (Grimpoteuthis-type). Species and specimens vary; the complete span includes the webbed arms and paired ear-like fins, with no claim that this is a maximum.
The marked vertical span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Dumbo octopus dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 30 cm | 20 cm to 50 cm | defined specimen | |
| 1 kg | 500 g to 2 kg | defined specimen |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · Everyday thingsA4 paper29.7 cmA4 paper is an ISO 216 paper format commonly used internationally for letters, forms and printed documents.
Around the same scale · SportOrienteering control marker30 cmAn orienteering control marker is a fabric flag with orange and white panels used to mark checkpoints in orienteering events.
Nearest higher value · Living thingsPigeon32 cmA pigeon is a bird that feeds mainly on seeds and is often seen in urban environments.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- MBARI — Dumbo octopusDeep-sea cirrate-octopus anatomy, including paired fins and webbed arms; the atlas uses a defined specimen.
There’s always another scale
Follow your curiosity.
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PeopleHuman liver28 cmThe human liver is a vital organ in the abdomen that processes nutrients, detoxifies chemicals, and produces bile for digestion.
Living thingsLeafy seadragon35 cmThe leafy seadragon is a marine fish from southern Australia with leaf-like appendages that help it blend into seaweed.
Everyday thingsPineapple30 cmA pineapple is a tropical fruit with a tough, spiky rind and sweet, juicy flesh, produced by the plant Ananas comosus.
SportBaseball catcher's mitt33 cmA baseball catcher's mitt is a heavily padded glove worn by catchers to receive pitches and protect the hand.
Living thingsAxolotl25 cmAn axolotl is an aquatic salamander from Mexico that retains its larval features and external gills throughout its life.