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  • Writer's pictureGethin Thomas

Snail Party

Originally published on Photoblog by Gethin Thomas October. 09, 2020

[65-365] 9th. October 2020- I was just walking along this morning and spotted this little arrangement of snails lying in wait for my camera.

They were sitting on top of an "A" board for a café all huddled together, and there are even more under the gap. I would love to know why they all chose this spot to congregate. Nature is so full of beauty and mystery.

Word for the day today- Chirality

The spiral shells of snails are often used as a textbook example of biological structures that possess chirality. Chirality is a property of asymmetry important in several branches of science. The word chirality is derived from the Greek χειρ (kheir), "hand," a familiar chiral object. Chirality is also described as handedness.

An object or a system is chiral if it is distinguishable from its mirror image; that is, it cannot be superimposed onto it. Conversely, a mirror image of an achiral object, such as a sphere, cannot be distinguished from the object. A chiral object and its mirror image are called enantiomorphs (Greek, "opposite forms")

So in practical terms shell-coiling is important because a snail’s sexual organs are usually twisted and it is difficult for snails of opposite handedness to reproduce.

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