yes
When humans become extinct.
well a dolphin could get a plastic can ring stuck on his throat and die from suffocate caused by the plastic can ring.
Overfishing
Fishing, in itself, does not cause a problem. Irresponsible and overfishing may do so.
Bad for food chain
None known to have become extinct, but some stocks were depleted, and regulations had to be put in for certain species.
overfishing, and fishes getting traped in abandoned nets
Some non-examples of overfishing are dogs,cats,hamsters,bears,and humans
people who fish should have a laces for fishing and NOT overfishing
ocean
One action which could help reduce the global problem of overfishing would be to impose safe catch limits. Another action that would help reduce this problem is to impose rules that prevent the unintentional killing and disposal of marine life.