Biology Cuddlefish and Camouflage Essay Example | Topics and Well Written Essays - 1000 words

Biology Cuddlefish and Camouflage - Essay ExampleCuttlefish have a short life couplet and a high growth rate. They are active swimmers with a predatory lifestyle, feeding largely on crabs, prawns, and fish.Cuttlefish possess eight forward-reaching arms narrow to grasp the prey after it has been captured using an additional pair of elongated tentacles (Chaddha, 2007) with a single suction cup at each tip. In the pose of the eight arms, there is a sm all(prenominal) beak, which cuttlefish use to break open the shells of mollusks, crabs, and other crustaceans (Animal Guide, www.pbs.org). According to Chaddha, The arms are also important for a defensive display in which the cuttlefish sucks water into its mantle cavity and spreads its arms in order to appear larger to its potential opponent. (2007).Like all cephalopods, cuttlefish possess a highly developed central nervous system with a well-defined capitulum. Their brain-to-body size ratios are the highest among all invertebrates. T he cuttlefish brain can handle input from a variety of senses, including sight, smell, and even sound (in the form of oblige waves). (Chaddha, 2007).3. Cuttlebone. The internalization of the shell that occurred with evolution in the cuttlefish has helped them to make out efficient swimmers. The internal shell of a cuttlefish, called the cuttlebone, retains air spaces and controls buoyancy making it functionally equivalent to swim bladders in fish (Chaddha, 2007). It also prevents them from colonizing the deep oceans since the pressure would cause a gas-filled shell to implode.