Ok, either issue a show variables where variable_name='datadir';
then follow up with scrutiny of folders underneath it. Folders are the schema/db folders.
Or look at the answer Here on the Stack pointing one to examining the /etc/my.cnf
file that may contain:
[mysqld]
datadir=/var/lib/mysql
on my Windows box they would appear as
C:\ProgramData\MySQL\MySQL Server 5.6\data>dir /ad
Directory of C:\ProgramData\MySQL\MySQL Server 5.6\data
09/13/2015 01:36 PM <DIR> ajax_stuff
07/14/2015 09:52 PM <DIR> mysql
...
11/11/2015 10:37 PM <DIR> so_gibberish
09/21/2015 01:10 PM <DIR> real_secret_stuff
Sorry, not on my mac at the moment