A team of 16 free divers from the recently returned to Honolulu’s Kewalo Basin Harbor aboard the supply vessel Imua with almost 106,000 pounds of marine debris removed from the reefs and beaches of the islands and atolls within Papahanaumokuakea Marine National Monument.

Papahanaumokuakea PMDP clean up
The team’s return marks the completion of their second 30-day clean-up expedition to Papahanaumokuakea in 2022, bringing the year鈥檚 cumulative total of marine debris removed to 202,950 pounds. Courtesy: Andrew Sullivan-Haskins/2022

The 583,000-square-mile area around the Northwestern Hawaiian Islands is the second largest wildlife refuge in the world, and contains 3.5 million acres of coral reefs. As one of the last wild places, it’s home to a plethora of seabirds, fish, endangered plants and animals that is off-limits to most humans, with the exception of a handful of volunteers, scientists and others.

The team collected over 96,000 pounds of ghost nets and over 9,000 pounds of ocean plastic debris from the reefs and shorelines of Kapou (Lisianski Island), Manawai (Pearl and Hermes Atoll), Kuaihelani (Midway Atoll) and Holaniku (Kure Atoll).

During their last large-scale clean up in July, they focused on Kamokuokamohoalii, Kamole and Kapou reefs and collected about 100,000 pounds of marine debris, bringing their cumulative total of debris removed to 202,950 pounds this year, and overall total to half a million pounds since they began large-scale cleanups two years ago.

Papahanaumokuakea PMDP clean up
A honu (Hawaiian green sea turtle) rests on a buoyant ghost net at Manawai (Pearl and Hermes Reef). Unless removed, ghost nets like this one remain a serious threat to entangle the wildlife they attract. Courtesy: Andrew Sullivan-Haskins/2022

Out of the 30 days Kevin O’Brien, PMDP founder and president, and his team spent living aboard the 185-foot Imua in the remote part of the Hawaiian archipelago, he said one of the most memorable days they had was when the team found two turtles tangled up in a ghost net that they were able to set free.

“It just makes me think every time I see something like this, the number of these incidents that we don’t see, has got to be like 100 or 1,000 times more than what we actually see,” he said. “It’s a sobering realization.”

Papahanaumokuakea PMDP clean up
PMDP鈥檚 lead diver and small boat operator Derek Levault returns for the day with a full load of ghost net that was collected from the remote reefs of Manawai (Pearl and Hermes Reef) by one of PMDP鈥檚 specially trained free-diving teams. Courtesy: Andrew Sullivan-Haskins/2022

The PMDP team trained vigorously for two months before their first large-scale clean-up in July, O’Brien said. All 16 members, the youngest of whom turned 20 during their trip, underwent a combination of in-house drills, an international free-dive safety course, and eight days of scientific motor boat operator training.

An estimated 114,000 pounds of marine debris accumulates on the reefs in Papahanaumokuakea each year, despite the fact that no one is allowed within its 200-mile border without a permit. This was the first year of PMDP’s five-year strategic plan聽to tackle the problem.

“Every time we get out there it’s an adventure,” O’Brien said.

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