rotifer smiling

Strangeness is all around, you just need to know where to look…

This is a coloured scanning electron micrograph (SEM) of the retracting foot of a bdelloid rotifer (class Bdelloidea). Rotifers (phylum Rotifera) are microscopic aquatic animals that are related to roundworms.  It is not really smiling it’s just the way its skin folds.

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