HONOLULU (AP) — Birds and turtles are developing digestive problems as their stomachs fill with plastic they mistakenly believe is food. The endangered Hawaiian monk seal population is struggling as many of the mammals get entangled in improperly discarded fishing nets.

A report by the National Research Council recommends the U.S. take the lead in coordinating management of marine debris.

It said international maritime regulations should be changed to ban the dumping of trash into the ocean.