Translation of nocivo

Two weeks ago I met a girl from Indiana and she told me that she was really sorry but that she would have no knowledge about Europe, Africa or Asia and that it was only due to lack of information on TV.
One could see in every touristic site and traveler's office advertisement for language schools and private teachers. The teachers usually gave the CV with an nice picture of themselves. It looked funny.
The young women rowed towards us and tried to sell food and souvenirs. We were not interested and she tried to block us and prevent us from swimming back to our vessel. So we dove beneath her.