Atlantic longarm octopus

About this species

Macrotritopus defilippi, commonly known as the Lilliput longarm octopus or the Atlantic longarm octopus, is a small species of octopus, a marine cephalopod mollusc of the order Octopoda.

Text from the Wikipedia article “Macrotritopus defilippi”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 13 records
February: 11 records
March: 20 records
April: 27 records
May: 57 records
June: 52 records
July: 10 records
August: 9 records
September: 15 records
October: 9 records
November: 7 records
December: 22 records

Depth and water temperature

Depth

Mostly recorded at 52–313 m · Deepest record: 462 m

10–20 m: 1 records
20–30 m: 0 records
30–40 m: 0 records
40–50 m: 2 records
50–60 m: 3 records
60–70 m: 0 records
70–80 m: 1 records
80–90 m: 1 records
90–100 m: 7 records
100–110 m: 1 records
110–120 m: 1 records
120+ m: 24 records

Water temperature

Recorded in surface water of 9–29 °C

8–10 °C: 2 records
10–12 °C: 1 records
12–14 °C: 5 records
14–16 °C: 1 records
16–18 °C: 21 records
18–20 °C: 13 records
20–22 °C: 2 records
22–24 °C: 0 records
24–26 °C: 3 records
26–28 °C: 5 records
28–30 °C: 18 records

Photos

(c) Pauline Walsh Jacobson, some rights reserved (CC BY), uploaded by Pauline Walsh Jacobson · CC BY · iNaturalist
(c) Robin White, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Pauline Walsh Jacobson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Pauline Walsh Jacobson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Ben Jobson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Ben Jobson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Nicola Faulks, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Atlantic longarm octopus, Lilliput longarm octopus, Lilliput long-armed octopus, Atlantic Long-armed Octopus, Atlantic Mimic Octopus, lilliput long-armed octopus, lilliput longarm octopus, Longarm Octopus

Names in 3 more languages

German: Atlantischer Langarmkrake, Langarmkrake
Spanish: Pulpo patilargo
French: Poulpe à longs bras

Other scientific names: Macrotritopus dana, Macrotritopus kempi, Octopus dana, Octopus defilippi, Octopus kempi

Similar species

Common Atlantic octopus
Octopus vulgaris
Coconut Octopus
Amphioctopus marginatus
Blue-ringed octopus
Hapalochlaena maculosa
Maori octopus
Macroctopus maorum
Big blue octopus
Octopus cyanea
Gloomy octopus
Octopus tetricus

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
192 open-data records from 1957 to 2019.
Species data updated November 4, 2026.