An antifouling is a substance which prevents or counteracts the buildup of barnacles and other deposits on undersea surfaces such as those of boats.
An antifoulant is any antifouling substance.
Annelie Hilvarsson has written: 'The antifoulant medetomidine' -- subject(s): Water pollution, Hazardous substances 'The antifoulant medetomidine' -- subject(s): Water pollution, Hazardous substances