Petroleum Geo-Services (PGS) launched a concept for collecting plastics at sea using seismic vessels. This project involves a single seismic vessel towing a boom and skirt arrangement with a bubble curtain that lifts plastic.
After conducting a feasibility study in 2018, PGS found that pelagic microplastic densities are too low for surface plastic collection to be efficient on the open ocean. However, densities may be higher in certain areas or during certain seasons, or during flush-out events.
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https://safety4sea.com/pgs-to-use-seismic-vessel-to-clean-oceans-from-plastic/