On the motility of living invertebrates The case of Artemia Salina
Using a laser beam deflection technique a non-destructive and non-invasive method is developed. This method is applied to monitor the motility of small invertebrates, in particular we study the important case of the crustacean Artemia Salina and the motion of its different parts. We find out that its dynamics can be explained as a superposition of several periodic motions with very well defined frequencies.