Is jumping off a cliff into the waters in Wales legal? Would I hurt myself?

A 91kg person jumping off a 57 meter cliff into the water. How long would it take to hit the water?

Looking to include area and air resistance.

in the new moon trailers is that really bella jumping off the cliff in the dress?

Bc im not sure if she wud jump off in a dress or mayb bc of harrys funeral. btw is there an official preview not fanmade? if there is plz giv me the website. I cant w8 4 new moon to come out!!!

Crazy and beautiful girl jump off 50 foot off the cliff into ocean.

Video Rating: 3 / 5 That woman has surely enough guts and dare jump off that great amount of height, i did once already but i don't want to try again due of my fear of heights a... Video Rating: 3 / 5

If Tim Tebow and the rest of his band of yo-yo's were jumping off a cliff, would you follow them?