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Fri Nov 20, 2015, 01:20 PM

 

This Animal Has a Suit of Armor With Hundreds of Built-In Eyes

http://www.theatlantic.com/science/archive/2015/11/this-animal-has-armor-with-hundreds-of-eyes-and-lenses-made-of-rock/416523/

Many animals are covered in protective armor—shells, scales, plates, and frills that protect their soft bodies. But one group of little-known sea creatures called chitons have evolved armor that's unlike anything else in nature.

Because it contains eyes. Hundreds of eyes.

With lenses made from rock, that erode as the animals age and have to be continuously replaced.

Chitons are mollusks, related to snails, clams, and octopuses. Their oval bodies are covered by a hard shell consisting of eight overlapping plates, which makes them look a bit like a woodlouse with a skirt, or perhaps like the forehead of a Klingon. In many species, these plates are dotted with hundreds of tiny beads, each less than a tenth of a millimeter across. These are eyes. Each contains a lens, a light-sensitive retina, and a layer of black pigment.



There's also an article on WaPo with a close up image of the 'eyes'. (trypophobia warning)

https://www.washingtonpost.com/news/speaking-of-science/wp/2015/11/20/how-one-animal-covers-its-body-armor-in-stoney-eyes/

6 replies, 8187 views

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Reply This Animal Has a Suit of Armor With Hundreds of Built-In Eyes (Original post)
aidbo Nov 2015 OP
byronius Nov 2015 #1
AlbertCat Nov 2015 #2
aidbo Nov 2015 #3
AlbertCat Nov 2015 #4
aidbo Nov 2015 #5
AlbertCat Nov 2015 #6

Response to aidbo (Original post)

Fri Nov 20, 2015, 04:02 PM

1. Great post.

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Response to aidbo (Original post)

Fri Nov 20, 2015, 06:10 PM

2. Chiton

 

When I was in school, a "chiton" was this:


Because I was studying costume design. (an ancient Greek garment)




Here's the etymology from the Wiki page on the mollusk:


The English name "chiton" originates from the Latin word chitōn, which means "mollusc", and in turn is derived from the Greek word khitōn, meaning tunic (which also is the source of the word chitin). The Greek word khitōn can be traced to the Central Semitic word *kittan, which is from the Akkadian words kitű or kita’um, meaning flax or linen, and originally the Sumerian word gada or gida.

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Response to AlbertCat (Reply #2)

Fri Nov 20, 2015, 09:27 PM

3. It's always interesting to look into the etymology of terms!

 

Just now looking at the wiki for chitons, I found out some chitons made use of a fibula. https://en.m.wikipedia.org/wiki/Fibula_(brooch)


Which shares its name with a bone in the lower leg so named because of it similar appearance.

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Response to aidbo (Reply #3)

Fri Nov 20, 2015, 10:12 PM

4. made use of a fibula.

 

Yes.

Oedipus puts out his eyes with Jocasta's fibulae after he cuts her down from hanging herself. No...not her calfs!

Greek Tragedy....it's tragic plus!

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Response to AlbertCat (Reply #4)

Sat Nov 21, 2015, 01:05 AM

5. Well, that's not how I'd want to make use of it. ;)

 

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Response to aidbo (Reply #5)

Sat Nov 21, 2015, 01:18 AM

6. Well, that's not how I'd want to make use of it. ;)

 

The basic lesson of Greek Tragedy that I can see is...


DON'T GO TO DELPHI!


Cave oracula!

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