In the past six years, several thousand elementary school students and other volunteers have tossed over a quarter million tennis ball-sized globs of soil, molasses and rice bran into the Ala Wai Canal in a valiant effort to help clean Hawaiʻi’s most notoriously polluted urban waterway.
The goal is to get those globs, known as “genki balls,” to release special sludge-eating microbes into the Waikīkī canal’s murky depths and boost its water quality. Since the effort started, canoe paddlers and others have at times observed clearer water and more fish. They’ve even spotted the occasional monk seal and an eagle ray.
But new research from Hawaiʻi Pacific University done on Oʻahu’s Windward side casts doubt on whether the genki balls actually led to any of that improvement — or if the novel approach that inspired the community is too good to be true.
The nonprofit that organizes those cleanups, Genki Ala Wai Ball Project, is firmly pushing back against the research, saying insufficient genki material was used and its ball tosses into the Ala Wai remain effective. Yet one of the project’s leaders sold the balls used in the HPU study and recommended how the researchers should use them…