cephalopod

noun

1. Any mollusc of the class Cephalopoda, which includes squid, cuttlefish, octopus, nautiloids etc.

   “In terms of diversity, cephalopods include the egg case making argonauts, shelled nautiluses, venomous blue-ringed octopuses and enigmatic giants like the giant and colossal squid. […] Generally, cephalopod ink includes melanin, enzymes related to melanin production, catecholamines, peptidoglycans, free amino acids and metals (Derby 2014) .”