Large water area neutrino detector, optimised for the detection of muons from high-energy astrophysical neutrinos. It is located at the coordinates 42°48'N, 6°10'E (40 km off the coast of Toulon (Fr). ANTARES is composed of 12 lines of about 350m each, covering a surface area of 0.1 km2

Antares is a real time infrastructure connected to shore opening new opportunities for environmental sciences. Recently an extension to this existing infrastructure was added to the sea bed network in the form of a secondary junction box and an Instrumented Interface Module (MII). In November 2010, during the so-called TEXREX operation,IFREMER deployed a secondary junction box (BJS) linked to the main ANTARES junction box. On the BJS, providing power and data transmission, 3 instrumented modules have been connected, providing real time data collection • The first module is a Deep Sea Net node, technology that will provide communication between distant site linked into an observation network (seismology, tsunami, ...). • The second module, the Instrumented Interface Module (MII) is hosting scientific instrumentation for environmental sciences. In its actual configuration, the MII is hosting a CTD sensor, an oxygen sensor, a turbidity sensor, a curentmeter (ADCP), an absolute pressure sensor ("tsunamimeter") and a very high sensitivity optical camera. The MII has been built with a wet meteable socket ready to receive an acoustic modem which will allow communication with an autonmous instrumented mooring line located nearby (less than 3NM). • The third module is a seismology modulee (broad band velocimeter (0.003-50Hz) , accelerometer, differential pressure and absolute pressure 1 Hz).(broad band velocimeter (0.003-50Hz) , accelerometer, differential pressure and absolute pressure 1 Hz).