OIST researchers identify new plastic-coral hybrid debris in Okinawa, dub it 'plasticorals'
Scientists from the Okinawa Institute of Science and Technology and the University of the Ryukyus found coral rubble on Okinawa's beaches containing melted plastic fused into its skeletal pores. Lab analysis using spectroscopy and microscopy confirmed the colored specks were polymers from everyday household plastics, not natural material. The team, led by Dr. Ifenna Ilechukwu and Professor James D. Reimer, published their findings in Marine Pollution Bulletin, naming the material 'plasticorals,' a form of plastiglomerate.
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The discovery adds a durable, physical marker of plastic contamination to reef environments that are already under stress from warming oceans and other pressures, according to the researchers. Because the plastic has melted into the coral's pore structure, it suggests this pollution could persist far longer than loose debris, potentially complicating reef recovery and monitoring efforts. The finding may prompt further surveys to determine how widespread such plastic-coral fusions are across other reef systems.
- Researchers in Okinawa identified a new plastiglomerate type called 'plasticorals,' formed when melted household plastics fuse into dead coral rubble.
- Confirmation came through spectroscopic and microscopic lab analysis, distinguishing the material from naturally colored coral.
- The findings, published in Marine Pollution Bulletin, highlight a potentially long-lasting plastic pollution impact on reef ecosystems already facing climate stress.
Source: oist.jp, 2026-10-21
Published there as: “New plastic pollution discovered: 'Plasticorals' coral rubble fused with plastic”
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