Definition(s)
Macrofouling
Macrofouling means large, distinct multicellular organisms visible to the human eye such as barnacles, tubeworms, or fronds of algae.
Source: Resolution MEPC.207(62), 2011 Guidelines for the control and management of ships’ biofouling to minimize the transfer of invasive aquatic species, 15 July 2011, International Maritime Organization. Regulatory Guidance