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.
Biogenic Sediment
Image courtesy of NOAA Ocean Exploration, Voyage to the Ridge 2022. Download larger version (jpg, 1.4 MB).

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.