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Nautilus and Allonautilus cephalopods and their extinct ancestors have been drifting through the mesophotic zone of the ocean for more than 500 million years. Researchers have spent the last 40 years trying to understand how these mysterious "living fossils" thrive in areas with limited nutrients. This article was imported from Currents API for editorial review in Elevate Articles. Review the title, summary, source, and category mapping before publishing it live.

