Explaining one thing a week in a sketch

Watch out for barnacles - Sketchplanations

Watch out for barnacles

Well, the barnacles we see don’t move. But when they’re little, they do swim, and once they’ve found their spot they basically cement themselves in place. They’re what’s known as sessile animals — ones that don’t move once settled, along with mussels and coral. Now that would be a different way of life.

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How do barnacles move anyway? - Sketchplanations
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