Defense strategies in Cephalopods

Cephalopods, most normall(a)y known as Octopus, Squid, and cuttle atomic number 18 naval mollusks, with a soft body parts. over 700 species of remove been identified in their marine habitats. These animals are truly fascinating creatures that continue to bedaze researchers and society with the behaviors they commit unquestionable through evolution. They have any(prenominal)(prenominal) of the largest and most complex brains in the invertebrate world and are highly intelligent creatures that have developed strategic leakage behaviors through natural filling to deceive their predators (Hanlon, 2007). Cephalopods belong to the various Phylum, phylum phylum Mollusca. In reference to taxonomy, Phylum Mollusca is made up of 6 different classes of invertebrate animals; Monoplacophora, Polyplacophora, Scaphapoda, Bivalvia, Gastropoda, and Cephalopoda. It is alien to think that a cephalopod mollusk is indeed classified with its shelled relatives. The taxonomy for a cephalopod b elonging to Phylum Mollusca may confuse some people. When the term Mollusk is utilize one tends to think of the puny invertebrate animal with the blanket protective(p) outer form of one or both shell(s). distinguish Monoplacophora, Polyplacophora, Scaphapoda, Bivalvia, Gastropoda, are animals which all possess shells as their protective mechanisms against predators. Each animal in the Phylum Mollusca possess a specific device for shelter; bivalves use their adductor muscles to come about their shells closed while snails and marine sea slugs in the Class Gastropoda have an operculum wich serves as their means to protect their heads during a predatory attack.\nThe fossil immortalize shows that Cephalopods today developed from their shelled ancestors Nautiloids and Ammonoids, they have evolved into animals that have the ability to attain and live with out the auspices of a shell. However, due to the absence of a shell, cephalopods became an ideal pig for other marine preda tors (Norman, 2000). A shell is a hard-nosed form of defense, so why has this ...