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Seashells can tell you a lot about the sea creatures that made them. Olga Pankova/Moment via Getty Images

Where do seashells come from?

Seashells are the skeletons of sea creatures – and they’re older than you might think.
Smaller animals that feed lower in the food web might be at greater risk from microplastic exposure than larger ones. (Shutterstock)

Microplastics may pose a greater threat to the base of marine food webs

We need to advance our understanding of the effects of microplastics on aquatic ecosystems, especially on small animals at the base of food webs that might be ingesting more of these particles.

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