Amoebas (resp. coamoebas) are the image under the logarithmic (resp. argument) map of algebraic (or analytic) varieties of the complex algebraic torus.
They inherit some algebraic, geometric, and topological properties of the variety itself. In this introductory talk, I will define these two objects and tell you some of their nice properties and focalize myself on coamoebas. I will give several examples in the case of plane algebraic curves.