Is there such thing as sea fruits?

I have never even ever heard of sea fruits until now! So apparently fruit grow under the sea and then someone swims under there to go and pick them up? Wow. Well it must be easy since it doesn't need water cause it's covered in water! But don't all fruit need sun to grow? I just searched sea fruits on google search and clicked on images and there all sea foods. So maybe sea fruit is another word for sea food? I wouldn't really have a clue. But I guess you learn something new everyday!