as far as I know, tourist，huge，dangerous，meter, weigh，protect，ocean |
I'm Amy Black．I have never seen sharks in the．But as a(n)，I have seen sharks in an aquarium(水族馆)．
，there are between 200and 250 kinds of sharks of different sizes．Sharks are muchthan other fishes．The largest carl be as long as 15 largest sharkabout 3，200 kilos．Usually sharks don't attack(攻击)people．Sometimes they attack peoplethemselves．One ofsharks is the Great White Shark．They attacked a lot of people on the beaches of America．
