This happened to me, but then I went to investigate where the name "campus" came from, since campus has nothing to do with sea in Greek. All I found is that there was a sea monster in Greek mythology of that name ...
(In Percy Jackson, there are sea horse which are proper horses only of the sea, I'm not sure where Rick Riden took the inspiration for them from)
Interesting.
I wonder what I did wrong in the first time I searched for this that I couldn't find anything.
So if I understand this correctly it is Greek mythology -> actual sea creature -> brain part.