Sea Lice Can Devastate Both Farmed and Wild Fish
Sea lice infections cause a generalized chronic stress response in fish. Sea Lice attachment causes chemical changes in fish skin, resulting in skin damage and open wounds, with secondary blood loss, electrolyte changes, and cortisol release. Subsequently, these infections decrease fish immune responses making them susceptible to other diseases and reducing growth.   
Research is ongoing at the University of St Andrews to develop a commercial prototype by 2019.
Sea Lice Solutions
Sea Lice Solutions by GenusWave protects salmon from parasitic lice infestation. The acoustic technology works by treating the salmon and surrounding sea water with ultrasound waves. These waves are harmless to the salmon but deadly to sea lice. Acoustic cavitation - gas bubbles that violently collapse- is especially effective on tiny aquatic organisms due to the presence of microscopic gas pockets which are ideal to absorb acoustic energy from ultrasound waves (according to some theorists). When key structures and membranes in the sea lice absorb that that energy, they rupture, killing the sea lice .
Based on a decade of research into the efficiency of ultrasound treatment on small pathogens, Sea Lice Solutions targets nauplius and copepodid stages of sea lice.
Research tests of ultrasound induced vibration killed zooplankton (like Lepeophteirus salmonis, Caligus rogercresseyi, and water fleas), E. coli bacteria, and Zebra Mussel veligers.
The Industry Knows It, Too:
Existing treatments are overwhelmingly pharmacological and have severe limitations: