The underwater neutrino telescope ANTARES has been continuously operating since 2007 in the Mediterranean Sea. The transparency of the water allows for a very good angular resolution in the reconstruction of signatures of all flavours neutrino interactions. This results in unprecedented sensitivity for the search of astrophysical neutrino sources at TeV energies, in the Southern Sky, so that valuable constraints could be set on the origin of the cosmic neutrino flux discovered by the IceCube detector. Aside from a search for neutrino sources on the full sky dedicated searches have been performed for promising neutrino source candidates - among those the high energy neutrino candidates from IceCube - and several interesting regions like the Galactic Plane or the Fermi Bubble.
ANTARES is also embedded in a manifold multi-messenger program with e.g. optical and X-ray follow-up observations of promising astrophysical neutrino candidates. External observations are also used by ANTARES in special analyses like a follow-up on Gamma Ray Burst events or the evaluation of possible neutrino signals correlated with the newly discovered gravitational wave signals. So far no significant correlation with external observations has been detected. Strong constraints could also be set on the dark matter cross section from the search of neutrinos from potential dark matter annihilation in massive objects like the Sun and the Galactic Centre.