As global leaders take the problem of plastic pollution into their hands, Japanese manicurist Naomi Arimoto is putting it into her fingernails.

At the beach near her home in Kanagawa Prefecture, Arimoto carefully sifts sand for tiny bits of plastic that she can mold into decorative tips to put on the false nails at her salon. She came up with the idea after taking part in community cleanups along the coast.

"I became aware of environmental issues the moment I saw with my own eyes just how much plastic waste was in the ocean," 42-year-old Arimoto said. "I thought it was horrifying."