Did the Ability of Cuttlefish to Change Color Come about by Evolution?

Upload and start working with your PDF documents.
No downloads required

How To Rearrange PDF Pages Online?

Upload & Edit Your PDF Document
Save, Download, Print, and Share
Sign & Make It Legally Binding

Easy-to-use PDF software

review-platform review-platform review-platform review-platform review-platform

Did the ability of cuttlefish to change color come about by evolution? Or was it designed?

Here’s something I found you might want to read; Cuttlefish evolution? Think again Like every animal phylum (a major division of life), the mollusks appear with no ancestors in the so-called Cambrian rocks. (A hypothetical archimollusc is set forth as the ancestor of all mollusks, but is not found in the fossil record.) The class Cephalopods appear in the fossil record in Ordovician rocks, again without evolutionary transition. Encyclopedia Britannica says of the cephalopods, ‘Phylogenetic [evolutionary] linkages are still highly theoretical 
’. The order sepioids appears in rocks no lower than the Jurassic system, again with no transitions leading to them. It is possible that all fossil and living sepioids may be the descendants of one ancestral created kind, based on the structural variation described in fossils. The cuttlefish also has eyes which are similar in construction to human eyes, but evolutionists do not believe it has any direct evolutionary relationship to humans (i.e. there is no possible ancestor to both cuttlefish and humans which could have had such an eye). So this similarity is explained away as ‘convergent evolution’. the eyes of the cuttlefish and other cephalopods ‘evolved independently’ to humans. In other words, it is simply an evolutionary coincidence. However, the similarity in the design of both the cuttlefish and human eye is easily explained—t had the same Designer! The origins of the amazing features of the cuttlefish can be more easily explained if we accept it as just another miraculous example of the work of the Creator. Redrawn after Clarkson, E, Invertebrate Palaeontology and Evolution, George Allen and Unwin, London, 1979 (Seventh impression 1984), p.167. Staying neutral The cuttlefish is a bottom-dweller which often lies in ambush for smaller animals. For this way of life, it needs to keep itself at neutral buoyancy, so that it neither sinks nor rises. At first glance, it would seem sufficient for the Creator to have endowed it with a fixed overall density, so that its own weight was exactly balanced by the upthrust of the surrounding water. However, if the depth changes, so will the amount of ‘lift’ from the water. Therefore in order to be able to operate at varying depths and water densities, cuttlefish need to be able to adjust their overall density so as to always remain ‘neutral’ in the water. The cuttlefish does this by an ingenious mechanism. The bony shell actually has many narrow chambers. If these were all filled with gas, t would give a lift of up to 4% of the animal’s weight. However, t are only part-filled with gas—the darker areas shown are where it is part-filled with liquid. The cuttlefish is able to pump liquid in and out of that section as needed to keep the buoyancy ‘just right’.

Customers love our service for intuitive functionality



46 votes

Rearrange PDF Pages: All You Need to Know

Now, we can see why a floating body needs to have a density of neutral, since the density is needed to be set up in a certain way to give stability and stability would require more fluid than the cuttlefish can give it. In a case like this, where the density adjustment has to be kept precisely, it would seem more reasonable to assume that the Creator made the creature as He wanted it, rather than that the creature was designed. We see the cuttlefish has the ability to change its volume. Now, we know that fish also vary in volume, by changing the length of their spine. The bony skeleton of the cuttlefish enables it to extend in the water column and the body cavity when it needs extra room for buoyancy. This allows it to dive to depths up to 675 feet. A close up.