Definitions

Chromatophores - These are pigmented cells that an organism can enhance by either expand or contract by using their muscles.

Hectocotylus - In octopuses found in the suborder Incirrata, one of the third arm pair is modified to allow for the storage and transfer of spermatophores to females. 

Spermatophore - The male gametophore.

Tetrodotoxin - A neurotoxin that can be found in a variety of organisms. 

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