The next ANTARES-KM3NeT Collaboration Meeting will be held in Valencia (Spain) next February 23rd -27th, 2015. The ANTARES Collaboration has designed, built and deployed the first undersea neutrino telescope located under the Mediterranean Sea, near Toulon. ANTARES is at present fully operational and taking data in its final configuration since 2008. KM3NeT is a large research infrastructure that will consist in a network of deep-sea neutrino telescopes in the Mediterranean Sea with user ports for Earth and Sea sciences.  Both collaborations are integrated by more than 200 scientists and engineers from more than 40 institutes or universities from ten different countries.

The main objectives of ANTARES and KM3NeT are the discovery and subsequent observation of high-energy neutrino sources in the Universe, the indirect search of dark matter and the determination of the mass hierarchy of neutrinos. During the meeting, the main topics concerning both collaborations, related to the construction of KM3NeT, electronics, mechanics, DAQ, QA/QC, calibration, infrastructures, etc., as well as the status of the physics analyses in ANTARES and KM3NeT, will be presented and discussed.

We will provide to all participants of this conference a comfortable environment that we expect will stimulate fruitful scientific discussions.