Which do you think is better and him me reasons why it is better and why the other isn't!

I think swimming is harder and safer because in hockey you skate and the skates have sharp blades which could cut you and in hockey all you need to know is how to skate, block and be on defence. But in swimming, well thats a whole different story, when you swim you use different muscles in which when you use them alot they start to work together better, making you stronger and more efficient in warding off your enemies.