Giant water swirls

What is the term for when water swirls really fast? Its nothing small like a glass of water. Im talking about like in the ocean or whatever. I cant explain it that well lol but its when water swirls really fast and its like 100 feet big or something and then itll suck you in. What is it called hahah I cant think of the right word for it, thanks. <3

I think those are called whirlpools

yea a whirlpool