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Biogenic Sediment
A close-up of biogenic sediment showing many pteropod shells, as well as two Paleodictyon (possibly P. nodosum) traces of unknown biological origin, as seen during Dive 04 of the third Voyage to the Ridge 2022 expedition.
Credit

NOAA Ocean Exploration, Voyage to the Ridge 2022

Related Expedition
Voyage to the Ridge 2022