Such involvement could include the participation of classical criminal gangs in the fishing operations, but more often is the adoption of some of their techniques in support of fishing, such as human trafficking, slave labour, tax evasion, money laundering, customs fraud, corruption, handling of stolen goods, etc.
Deze betrokkenheid kan tot uiting komen in deelname van klassieke boevenbendes aan visvangst, maar vaker komt het voor dat bij de visserij bepaalde criminele methoden worden ingezet, zoals mensenhandel, slavenarbeid, belastingontduiking, witwassen, douanefraude, omkoping, heling, enz.