  We demonstrate that next generation high-energy neutrino telescopes may
reveal the existence of interactions induced by standard model electroweak
instantons. The energy spectrum, the angular distribution, and the quark and
lepton multiplicity of events in the detector each provide signatures which can
indicate the presence of these interactions. High-energy neutrino telescopes
may be capable of searching for signals at energies far beyond the reach of the
next generation colliders.
