So tiny! Quick gloss snails

I came upon a collection of the tiniest snails I have ever seen. I estimate at least 50 in the one location.

 

With shell diameters of no more than 5 mm, they were truly Lilliputian. The shells being flattened-heliciform.

 

I learned that they are Zonitoides arboreus, commonly known as quick gloss snails - and not native to Australia but North America.

 

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