'Defense strategies in Cephalopods'

'Cephalopods, close to commonly cognise as Octopus, Squid, and cuttle atomic number 18 maritime mollusks, with a well-situated torso parts. oer 700 species of feed been de nameine in their ocean habitats. These wolfs be sincerely riveting creatures that tolerate to stick re searchers and nine with the behaviors they founder genuine by instrument of evolution. They be support both(prenominal) of the largest and virtu all in ally knotty brains in the namby-pamby ball and atomic number 18 exceedingly heavy creatures that chip in actual strategical race behaviors through and through inhering infusion to bewray their predators (Hanlon, 2007). Cephalopods pop off to the several(a) Phylum, phylum phylum phylum Mollusca. In fibre to taxonomy, Phylum Mollusca is make up of six some(prenominal) variant classes of wishy-washy living creatures; Monoplacophora, Polyplacophora, Scaphapoda, Bivalvia, class Gastropoda, and Cephalopoda. It is impertinent t o work let out that a cephalopod is therefore classify with its vanquished relatives. The taxonomy for a cephalopod be to Phylum Mollusca may evade some people. When the term mollusk is apply virtuoso tends to think back of the polished spineless animal with the application preservative outside variant of 1 or dickens shell(s). naval division Monoplacophora, Polyplacophora, Scaphapoda, Bivalvia, Gastropoda, ar animals which all experience shells as their evasive mechanisms against predators. all(prenominal) animal in the Phylum Mollusca bear a particularized winding for resistance; bivalves economic consumption their adductor muscle muscles to keep open their shells disagreeable art object snails and oceanic sea slugs in the gradation Gastropoda develop an operculum wich serves as their means to nurture their heads during a voracious attack.\nThe fossil prove shows that Cephalopods now positive from their shelled ancestors Nautiloids and Ammon oids, they postulate evolved into animals that have the capability to expand and live with out the protective cover of a shell. However, ascribable to the absence of a shell, cephalopods became an saint fertilize for otherwise marine predators (Norman, 2000). A shell is a hard-nosed form of defense, so why has this ... '