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- Cephalopods have the most developed brain out of the phylum mollusca.
- Cephalopod means "head-foot" in Greek.
- Cephalopods have long arms or tentacles instead of a singular foot which is found in most molluscs.
- Some cephalopods may have a shell, such as a Nautilus, while others like octopii may lack one.
- Most cephalopods have an ink sac that can release ink if threatened by a predator.
Examples of cephalopods include octopii, various types of squid, and cuttlefish. 		             
  Octopus   Caribbean Reef Squid  
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