A strange tiny species of crustacean has challenged the way we think about natural selection and evolution. This microscopic animal, known as a water flea or Daphnia pulex, generates genetic ...

Zooplankton include one of Earth's most abundant animals, the copepod: a microscopic crustacean ranging in size from 0.5 to 15mm. Large copepods are eaten by larval fish, which scientists also ...

Scientists track Antarctic krill via satellite to monitor ocean health amid climate change and fishing threats.