Some worms have eyes to see with. Most worm eyes are simple pigment cup ocelli. They usually have only a few light sensitive cells with pigment cells behind them. Several types of worms can live if cut in half, some cannot. Worms reproduce in many different ways.
Earthworms are hermaphroditic, both male and female at the same time.
When they mate, each gives and receives sperm cells, and both have offspring. But some worms have ones that are males only. Again, worms eat in many different ways. Some filter food out of water with mucus nets, others digest food out of soil, others have jaws and eat small animals, and leeches suck blood. There are several different groups of animals called worms.