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A Diatom Helix
This beautiful marine diatom Chaetoceros debilis was caught in the North Sea. Not...
A Bloom of Moon Jellies
In recent years, blooms of jellyfish, such as these moon jellies (Aurita aurita) in...
An American crocodile (Crocodylus acutus) resting on a bed of seagrass. These...
Sea Ice Extent
Every year the Arctic sea ice grows and shrinks in accordance with the seasons. The...