BREVARD COUNTY, Fla. — Cleaning up litter is Keep Brevard Beautiful’s goal, but one of the biggest problems is plastics.

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Watch: UCF campus home to thousands of bats

Linda Walters researches microplastics in the Indian River Lagoon. Microplastics are smaller than 5 millimeters and most look like small fibers, while others look like tiny fragments.

“(There’s) at least a piece of plastic in every liter of water,” Walters said. “That’s scary.”

Our beautiful waters are filled with billions of microplastics, most of them too small to be seen with the naked eye.

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Microplastics are so small that oysters filter feeding and take them in. On average, some of the oysters take up to 20 pieces.

“So, if you’re an oyster eater, that’s something to think about,” Walters said.

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See more in the video above.

WATCH: UCF campus home to thousands of bats At the University of Central Florida’s Harris Engineering building, at the bottom of a trench, is an old drainage pipe that’s now home to a large bat colony. (George Waldenberger, WFTV.com/WFTV)

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