Researchers have asked mariners to watch out for the donut-shaped device.

Seismic sensor lost at sea rattles scientists

<p>Daybreak North connects, challenges and champions Northern British Columbia. Host Carolina de Ryk presents memorable interviews and original journalism from Prince George to Prince Rupert, Haida Gwaii to the Robson Valley, and the Cariboo to the Peace and Fort Nelson.</p>

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Daybreak North connects, challenges and champions Northern British Columbia. Host Carolina de Ryk presents memorable interviews and original journalism from Prince George to Prince Rupert, Haida Gwaii to the Robson Valley, and the Cariboo to the Peace and Fort Nelson.

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Seismic sensor lost at sea rattles scientists

Seismic sensor lost at sea rattles scientists