In this work we show a study of the dynamics and clouds in the equatorial zone of Jupiter. The studied area is wider than the pure Equatorial Zone ranging from the southern limit of the South Equatorial Belt (SEB) to the northern limit of the North Equatorial Belt (NEB). We have used images from the Cassini flyby in December 2000 (wavelengths of 752 and 939 nm) and from the Galileo orbiter taken in 1999 and 2001 (wavelengths of 559 and 756 nm). When needed we have used images from the International Outer Planet Watch database to complete the time coverage of the dataset. In visible wavelengths the study of the dark-bluish regions in the northern limit of the NEB that corresponds to the infrared hot spots show that they have the characteristics of a Rossby wave and can be explained as some Rossby wave induced effect. Nevertheless trying to explain the smaller and more abundant dark marks situated on the southern limit of the SEB in the same way has proven to be much more difficult. We will also describe our measurements of an anticyclonic white oval situated near the SEB dark marks. Finally we will present three train gravity waves that we have found in Galileo maps near the Equator.