i wonder if dinosuars still exist

but in montery california there have been many dissaperences jus alone in 2007 there were 569 dissaperences out on sea scientist beleave that it was the dinosuar "plisaur" like the woman that traveled around the world with her boat she dissapeared off her own boat but a webcam attached to her top sail pointing down shows something with fuor fins a long neck and a long tailin the water swimming towards her because before that she was knocked out off her boat as her boat drifted away she was pulled under by something
QUICK FACTS:
In 1924 a weird species showed up on montery beach it looked like it had only died a day before it was found they ran continous test on it but it was a unknown animal
Then in the 90's a japense fishing boat brought a strange animal up out of the water it looked like it died a week before they found it.
here is my question are we alone? are they out there?