god, it s a five-foot shark attached to my leg. reporter: 16-year-old nick arthur now sharing how he desperately tried to fight it off. the pressure was so intense. i was trying to pry its mouth open. reporter: tim arthur, hearing his son s screams, joined the fight. finally getting the shark to let go by hitting it on the nose. nick was rushed to the hospital, receiving 17 stitches, but suffering no serious injuries in last week s attack. shark bites are actually way down this year, only 18 worldwide since january 1st. the lowest level since 2005. experts believe it is likely due to fewere bein water during the coronavirus lockdowns, but more people are headed back after beaches began reopening in may. and david, though attacks are down, nearly half of shark attacks worldwide occurred in the u.s. two in florida waters. david? adrienne bankert with us tonight. thank you, adrienne. when we come back here, those severe storms tonight from dallas all the way up to chicago. dange