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Fish Heart Out of Water
Under the lens of a microscope—in a shallow, glass well—spindly orbs pulse at...
Cells Get Fat
These cells are from a pygmy sperm whale in a laboratory culture dish. The red dyed...
Tardigrades, which are usually less than 1 mm long, can be found in almost every...
The Spanish Dancer
The Spanish dancer is one of the largest species and best swimmers of the...
Close-up View of Salps
This close-up view of salps, which have aggregated together into a long chain, have...