Editing Biofouling (section)

==== Ultrasonic antifouling ====
{{main|Ultrasonic antifouling}}
Ultrasonic transducers may be mounted in or around the hull of small to medium-sized boats. Research has shown these systems can help reduce fouling, by initiating bursts of ultrasonic waves through the hull medium to the surrounding water, killing or denaturing the algae and other microorganisms that form the beginning of the fouling sequence. The systems cannot work on wooden-hulled boats, or boats with a soft-cored composite material, such as wood or foam. The systems have been loosely based on technology proven to control algae blooms.<ref>{{cite journal|last1=Lee|first1=TJ|last2=Nakano|first2=K|last3=Matsumara|first3=M|year=2001|title=Ultrasonic irradiation for blue-green algae bloom control|journal=Environ Technol|volume=22|issue=4|pages=383–90|doi=10.1080/09593332208618270|pmid=11329801|bibcode=2001EnvTe..22..383L |s2cid=22704787}}</ref>