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Differences
  • When hunting, some octopuses inject poison into the prey, causing paralysis.
  • Octopuses range in size from 1 cm to more than 5 m in length, while squids range from 1 cm to 20 m.
  • Octopuses live in dens on the sea floor. Squids live in the open oceans.
  • Both octopuses and squids are related to snails and other molluscs. Unlike snails, octopuses no longer have any remnant of a shell. Squids possess a stiff structure known as a pen, that acts as a flexible backbone.
  • Octopuses are solitary animals that live alone in dens.

Some squids live in large schools, others are solitary. Some squids school when young and become solitary later in life.

  • Squid have two tentacles and eight arms, and octopuses just have eight arms.

Edit: This list seems to be all wrong (except the very last point, which I need not discuss), thusly highly misleading.

  • All squids and octopuses have a venom gland and venomous bite

    Read more: Is_the_common_squid_poisonous

  • The giant squid (genus: Architeuthis) is a deep-ocean dwelling squid in the family Architeuthidae, represented by as many as eight species. (wikipedia)
  • Deep/open. I'll let you have this one because I can't fact-check it in 2 minutes (remember, I found this question because I'm looking for the answers myself)
  • This could be right. I remember watching a highly flexible octopus (on a show about problem solving abilities in animals). Squids seem to be less prone to changing shape.
  • I've seen schools of squids. This one could be right too.
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Wiki User

13y ago
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Wiki User

13y ago

An Octopus is much larger than a squid however, there are squids named colossal squids which can appear much larger than octopus. Have a look on Google images and look at the sizes. Also I am not sure if squid have less tentacles than octopus.

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Wiki User

13y ago

Squid and Octopus are both underwater dwellers of the sea. They are classified differently.

Squid

Kingdom:Animalia

Phylum: Mollusca

Class:Cephalopoda

Superorder:Decapodiformes

Order: Teuthida

Octopus

Kingdom:Animalia

Phylum: Mollusca

Class:Cephalopoda

Superorder: Octopodiformes

Order: Octopoda

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Wiki User

14y ago

Squids have not only eight tentacles but also two arms and they have a much... pointier head. the eyes of a squid in comparison to their body are the largest in the world.

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Wiki User

12y ago

Squids have 6 legs and octupuses have 8 legs

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Wiki User

11y ago

an octoplus has 8 arms

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14y ago

there a different size

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11y ago

They both have eight arms

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Wiki User

14y ago

anga

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Q: What is the difference between a squid an octopus?
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