Visual Differences:
- Octopi usually have circle shaped heads, while squid have torpedo/diamond shaped ones with fins on the side.
- Squid have much larger eyes.
- Squid have an extra pair of long tentacles.
- Some octopi have webbing between their arms.
- Octopi sometimes LOOK like bumpy while squids sometimes look 'slimy'.
Behavior Differences:
- Octopi use color-changing as camouflage more than squid do.
- Squid swim in the water while octopi usually crawl on the ocean floor.
- Octopi hunt alone, some squid come as schools.
- Octopi can change the texture of their skin for camouflage and emotions.
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