''Chiroteuthis imperator,'' or the emperor squid is a species of chiroteuthid

squid True squid are molluscs with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting ...

. It lives off the coast of Sumatra in the Indo-Pacific Ocean..Chiroteuthis (Chirothauma) imperator - Properties - The Taxonomicon
It grows to a

mantle A mantle is a piece of clothing, a type of cloak. Several other meanings are derived from that. Mantle may refer to: *Mantle (clothing), a cloak-like garment worn mainly by women as fashionable outerwear **Mantle (vesture), an Eastern Orthodox ve ...

length of 30 cm, and has incredibly long arms which give it a total length of probably 1,6m..

References

Squid Molluscs described in 1908 {{squid-stub