The problem is not serious in offshore waters, but it is difficult to tell if it is in the open ocean, because if you fish with a net there may be venomous marine life inside.
For example, sea snakes. But they are in the open sea, there is no time to save them and there is no serum, so they will probably have to be amputated immediately.
However, modern fishing technology is advanced and protective measures are in place, so don't worry too much.
Another problem is the weather, but this can be predicted by looking at weather information.
Salaries for fishermen are relatively high, but the prerequisite is knowing how much is caught, or whether you get hired is another way of putting it. When you fish, you go out into the open sea to catch, usually once a fortnight, in the vast sea, with no boats around, only lare boatmen on the same boat as you. During the fishing season, you will sometimes work without sleeping for several days. The smell of fish and gasoline on the boat will make you tired. The waves on the sea are often not calm. Sometimes when the waves hit, the ship collides and high waves come. Even the biggest ship is small in the sea. Sometimes it sinks and sometimes it floats. If you're still working outside the boat, you're being bludgeoned back and forth like a ball, and you can imagine standing on a board and moving from side to side with little support. Generally speaking, when fishing, fishermen use their lives to make money. If you are not careful on the boat, your life may be in danger. Maritime accidents occur every year. If you want to go fishing, be mentally prepared. But you have to pay attention to everything on board. I only give a briefscription. The details are up to you.