Most straws are made of plastic, the same material used for disposable bags, bottles, and cups. Plastic has many properties, or characteristics, that make it useful. It’s inexpensive, water-resistant, lightweight, and strong.
“Plastic is a great material to use for items that we want to last for a long time,” says Kara Lavender Law. She’s an ocean scientist at the Sea Education Association in Massachusetts. “But single-use items like straws become trash in a matter of minutes.”
Plastic’s properties can also make it harmful to the environment, says Law. Unlike paper, plastic doesn’t completely biodegrade, or break down over time. Instead, the material crumbles into tiny fragments. Scientists think that these fragments will stay in the ocean for thousands of years.
An estimated 8 million tons of plastic waste washes into the ocean each year. Straws make up only a small fraction of that pollution. But they can still cause problems for sea life. Scientists have found plastic straws wedged in the nostrils of sea turtles. Seabirds have also mistaken bits of the straws for food.