User talk:EttingerRE

Cuttlefish, although colour blind, are able to change the colour of their skin. The chromatophores are elastic sacs containing different pigments. Bands of muscle radiate from each chromatophore and are controlled by neurons from the motor centres in the brain. The cuttlefish can control the contraction and relaxation of the muscles around individual chromatophores, thereby opening or closing the elastic sacs and allowing different levels of pigment to emerge. This allows the cuttlefish to change its color at will to match its background for camouflage. Reflecting plates called leucophores and iridophores are specialized to reflect certain wavelengths of light and can be used in conjunction with the chromatophores to create shimmering color effects on the skin. The reflectance spectra of cuttlefish camouflage patterns and several natural substrates (stipple, mottle, disruptive) can be measured using an optic spectrometer The colour variations in the substrate and animal skin are very similar. Depending on the species, the skin of cuttlefish responds to substrate changes in distinctive ways. By changing naturalistic backgrounds, the camouflage responses of different species can be measured. Sepia officinalis changes colour to match the substrate by disruptive patterning (contrast to break up the outline), where as Sepia pharanonis matches the substrate by means of blending in. Although camouflage is achieved in different ways and in an absence of colour vision, both species change their skin colour to match the substrate. Cuttlefish adapt their own camouflage pattern for a particular habitat. An animal could settle in the sand and appear one way, with another animal a few feet away settled in algae and camouflaged differently. Cuttlefish can also perform camouflage in pitch-black ocean Cuttlefish can assess their surroundings and match the colour, contrast and texture of the substrate even in total darkness.

Wikipedia talk:Articles for creation/Cuttlefish- Camouflage concern
Hi there, I'm HasteurBot. I just wanted to let you know that Wikipedia talk:Articles for creation/Cuttlefish- Camouflage, a page you created, has not been edited in at least 180 days. The Articles for Creation space is not an indefinite storage location for content that is not appropriate for articlespace.

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Thank you for your attention. HasteurBot (talk) 17:04, 20 August 2013 (UTC)

Your draft article, Wikipedia talk:Articles for creation/Cuttlefish- Camouflage


Hello EttingerRE. It has been over six months since you last edited your WP:AFC draft article submission, entitled "Cuttlefish- Camouflage".

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Thanks for your submission to Wikipedia, and happy editing. HasteurBot (talk) 00:01, 19 December 2013 (UTC)