SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Sea squirt's gills. Coloured scanning electron micrograph (SEM) of a sea squirt's gills. This marine animal uses its gills to filter water for plankton. It spends its adult life attached to a rock or reef, after transforming from a larval stage. Magnification: x60 at 6x7cm size.
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