  We describe the Neutrino Spectrum and detection for SN II sources. We discuss
the effects of neutrino mixing in the SN II. A new analysis of SN1987A is
described. We discuss the possible detection of the diffuse relic SN II flux.
Finally we discuss a new detection concept, OMNIS, for Nu sub mu and Nu sub tau
and detection and compare with other present and future SN detectors.
