SAN FRANCISCO (AP) — A new study has found ocean garbage is making its way into the seafood we buy.

The study was conducted by the University of California at Davis and Hasanuddin University in Indonesia.

READ MORE: Golden State Warriors Beat Luka Dončić Led Mavericks, Reach Sixth NBA Finals In Eight Years

Researchers found that one-fourth of the fish sold at sampled markets in California and Indonesia had man-made ocean garbage in their guts.

READ MORE: Gun Control Or Mental Health Reform? UC Davis Researchers Say We May Be Focusing On Wrong Problem

Researchers say the garbage found in fish for sale in Indonesia was plastic debris.

MORE NEWS: Purchaser Of $1.6M Winning Lottery Ticket From Sacramento Store Did Not Claim Prize By Thursday's Deadline

Most of the garbage in fish sold in California markets was fibers. Researchers think the fibers may have come from dumped wastewater from California washing machines.