Daphnia

Titles in French and English help us know what were seeing In all waters daphnia abound They are crustaceans about 2 ml long with one eye that turns in all directions Antennae enable daphnia to move in a close up magnified 150000 times we see the muscles of the antennae pulse We see the eye the nerve mass blood globules and the heart beating several times per second The intestine forms a long line All are females eggs develop above the intestine New generations come rapidly Inside each daphnia are tiny infusoria we watch them clean the intestine of a dead daphnia An enemy the hydra approaches A daphnia dies but many remain