Complexity ever in the eye of its beholders, the animal with the most genes -- about 31,000 -- is the near-microscopic freshwater crustacean Daphnia pulex, or water flea. By comparison, humans have ...

New study shows that the roots used by three close species of microscopic Daphnia crustaceans to settle across the territory of Northern Eurasia differed greatly. This findings shed light on how the ...

Daphnia magna is an almost-microscopic, transparent, fresh-water crustacean that looks something like a very intelligent, infinitesimal shrimp. But for medical researchers Daphnia has other charms ...

Copepods are tiny crustaceans found in both marine and freshwater environments. These little swimmers are an important food source at the bottom of the food chain. Jennifer Delaney Barnacle are marine ...

Each year people break out their cameras and microscopes for the Nikon Small World Motion Photomicrography Competition. The submissions give us a unique glimpse into the realm of the extremely tiny.