Cuttlefish Essay

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The Advantageous Evolutionary Adaptations of Cuttlefish Sepia latimanus, or common name cuttlefish, can be considered as one of the most uniquely evolved creatures of marine habitat. The species, despite their name, are not a fish, but molluscs. Coming from kingdom animalia, phylum mollusca, class of cephalopods, they belong to the order of sepiida ( The adaptations this species acquired have formed an advantage unlike most others. Physiologically the cuttlefish is advanced in numerous ways. Its cuttlebone, skin, eyes, and shape are all exemplary factors that make cuttlefish advantageously evolved to adapt to their habitat. The evolution of their neutral buoyancy, ink, and circulation has also helped the animal become successful. The diet and habitat of cuttlefish are not very different than other marine life, but that may be the only simple part about these molluscs. A major distinction of cuttlefish from other squids is the presence of the cuttlebone. Primarily composed of aragonite, it is a porous, hard, and brittle structure found internally. The shell itself is chambered and made up of microscopic narrow layers connected by upright pillars ( The chambers become gas filled in the front and water filled in the rear to maintain the neutral buoyancy of the cuttlefish. The buoyancy allows the cuttlefish to hover over the floor of the oceans. The siphuncle is highly modified, running on the ventral side of the shell. Although the cuttlebone is unique to the cuttlefish, it does have a minor set back. Between the depth of 200 and 600 meters the cuttlebone can implode. Because of this factor cuttlefish have adapted to the seafloor in shallow marine waters as their habitat. The most stunning feature of cuttlefish is their skin. It has the ability to change color in both degree and kind, making it easily surpass

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