The Seismic Research Centre monitors active volcanoes in 8 islands of the Lesser Antilles. The backbone of the monitoring has historically been – and still is- the continuously recording seismic network. For the past 20 years, geodetic techniques have been integrated to the monitoring, especially at the Soufriere of St Vincent during the 1979 eruption. SRC now has a GPS network in all the islands which are reoccupied through time to assess any potential ground deformation associated with volcanic activity (e.g., intrusion of magma within the volcano). More recently, SRC implemented the study of volcanic fluid to the volcano monitoring, especially in areas of strong hydrothermal activity and/or degassing (e.g., Dominica, St Lucia, Grenada, St. Vincent).