John C wrote:
Do marines fly f18s and off carriers?

Yes and the Marines will fly off carriers even more so in the future.

http://www.fas.org/man/crs/RS21488.pdf
The cross-assignment of the 6 Marine Corps squadrons would add to the
4 Marine Corps strike fighter squadrons that, since the 1990s, have
been assigned to help fill out Navy carrier air wings, bringing the
total number of cross-assigned Marine Corps squadrons to 10.

Of course this means that in the future the USMC will shift to all
non-carrier strike fighters (F-35B) so that the Navy will quit borrowing
them. ;-)

-HJC