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Globorataloides hexagonus Shell

A Globorataloides hexagonus shell.

This image of a Globorataloides hexagonus shell was taken in relation to a study in which researchers created a map of oceanic “dead zones”.

Globorataloides hexagonus is a species of foraminifera (single-celled organisms about the size of a large grain of sand that form hard, calcium carbonate shells), that is only found in low oxygen zones.