  KM3NeT is a deep-sea research infrastructure being constructed in the
Mediterranean Sea. It will host the next generation Cherenkov neutrino
telescope and nodes for a deep sea multidisciplinary observatory, providing
oceanographers, marine biologists, and geophysicists with real time
measurements. The neutrino telescope will complement IceCube in its field of
view and exceed it substantially in sensitivity. Its main goal is the detection
of high energy neutrinos of astrophysical origin. The detector will have a
modular structure with six building blocks, each consisting of about one
hundred Detection Units (DUs). Each DU will be equipped with 18 multi-PMT
digital optical modules. The first phase of construction has started and shore
and deep-sea infrastructures hosting the future KM3NeT detector are being
prepared offshore Toulon, France and offshore Capo Passero on Sicily, Italy.
The technological solutions for the neutrino detector of KM3NeT and the
expected performance of the neutrino telescope are presented and discussed.
