‘Ghost Fishing’ is what fishing gear does when it has been lost, dumped or abandoned. Nets, long lines, fish traps or any man made contraptions designed to catch fish or marine organisms are considered capable of ghost fishing when unattended, and without anyone profiting from the catches, they are affecting already depleted commercial fish stocks. Caught fish die and in turn attract scavengers which will get caught in that same net, thus creating a vicious circle. Learn more on ghost fish.org .
Here this video shows a Live example on how ghost fishing effects on marine life. This is a rescue operation done in FORV Sagarsampada on cruises in South Eastern Arabian Sea.