Yes, that's right. You need to consider a caution sign. I was swimming around with the dolphins having a fun time and there is no sign up anywhere about what that hole on top of their head is for. Apparently my first assumptions were wrong and the thing turned around and bit um...something that is very near and dear to me. Rest assured the pain is very intense, and I would not want the same to happen to another innocent Roman passerby...thought I'd let you know.