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Vast 'Garbage Island' Threatens Pacific Ecosystems
19 Aug
Summary
- Estimated 1.6 million sq km ocean patch between Hawaii and California.
- Trillions of plastic pieces, 79,000 tons of mass, mostly fishing gear.
- Over 700 species documented consuming plastic, ghost fishing is a risk.

An enormous 'garbage island,' estimated to cover 1.6 million square kilometers, resides in the Pacific Ocean between Hawaii and California. This vast plastic accumulation consists of trillions of pieces, with a central mass of approximately 79,000 tons, largely composed of fishing nets and other gear. The debris concentration forms within the North Pacific Subtropical Gyre, a circulation system that traps floating materials.
While microplastics make up the majority of pieces, larger items, especially those over five centimeters, constitute most of the mass. Abandoned, lost, or discarded fishing gear accounts for a significant percentage of this weight. This massive plastic patch poses a grave threat to marine ecosystems, as over 700 species have been observed consuming plastic. Furthermore, lost fishing nets continue to ensnare marine life in a phenomenon known as 'ghost fishing.'
Research indicates that the plastic concentration in this region has been growing exponentially since the 1970s. While cleanup projects have removed hundreds of tons of debris, they face limitations if plastic input exceeds removal rates. Experts emphasize that effective solutions require a dual approach: reducing new plastic emissions while simultaneously recovering legacy waste to mitigate the ongoing fragmentation and accumulation of plastic in the ocean.