Growing ocean garbage patch threatens Pacific seabirds

Midway Atoll, Northwestern Hawaiian Islands — Flying into the uninhabited Northwestern Hawaiian Islands, Midway Atoll appears out of the vast blue Pacific as a tiny oasis of coral-fringed land with pristine white sand beaches that are teeming with life.

But on the ground, there’s a different scene: plastic, pollution and death.

With virtually no predators, Midway is a haven for many species of seabirds and is home to the largest colony of albatross in the world.

But Midway is also at the center of the Great Pacific Garbage Patch, a vast area of floating plastic collected by circulating oceanic currents. The Hawaiian Islands act like a comb that gathers debris as it floats across the Pacific. A recent analysis found that the patch is accumulating debris at a faster rate than scientists previously thought.

Midway is littered with bird skeletons that have brightly colored plastic protruding from their decomposing bellies. Bottle caps, toothbrushes and cigarette lighters sit in the centers of their feathery carcasses.

“There isn’t a bird that doesn’t have some (plastic),” said Athline Clark, the National Oceanic and Atmospheric Administration’s superintendent for Papahanaumokuakea Marine National Monument, which Midway is part of. They “fill their bellies up with plastics instead of food and eventually either choke or just don’t have enough room for actual nourishment and perish.”

Sharp plastic pieces can also perforate their intestines and esophagus.

Papahanaumokuakea, which quadrupled in size under President Barack Obama in 2016, is the world’s largest marine conservation area and was inscribed in 2010 as a UNESCO mixed World Heritage site.

“Papahanaumokuakea is both a biologically rich and culturally sacred place,” Clark said. “The Hawaiians call it a place of abundance, or aina momona.”

But circulating currents now bring an abundance of plastic and other trash from all around the Pacific Rim to Hawaii’s beaches. The debris ranges from tiny microplastics that nearly every animal in this marine ecosystem ingests to huge fishing nets that gather plants, animals and other debris while bulldozing across fragile coral reefs.

“The estimates are that there’s about 57,000 pounds of marine debris that washes ashore within this part of the archipelago annually,” Clark said.

And it’s not just the seabirds that are harmed by ocean plastic. Endangered Hawaiian monk seals and green sea turtles can die while entangled in plastic nets. Sharks and other apex predators eat smaller fish that feed on microplastic. Whales drag fishing line and buoys behind them during their long migrations across the world’s oceans.

It’s important to understand the relationship between the oceans, marine life and humans, Clark said.

She shared a Native Hawaiian proverb: “Ma o ke kai pili ai kakou.” It means, “The ocean connects us all.”

Caleb Jones is an Associated Press writer.

This article was originally published By Caleb Jones, sfchronicle.com