"You need to use an extension."
Could you offer a bit more detail or perhaps some specific suggestions?

Thank you to all those who took the time to offer me some assistance. It's my sincere hope that you might receive the kind of assistance that you offered me.
The solution to my problem, a method that would allow me to export Opera Bookmarks, was solved by the use of the extension:

Bookmarks Import & Export - by Martin Sermak - Copyright 2014

Thank you to Martin for this workable solution to a problem that should never have been passed on from Opera Developers to their user base.
I for one will move on to Firefox and probably never consider Opera as a viable browser again.

Which ones is it missing?

It seems to be missing all those that are currently "lacking".

An extension that may ... or may not ... implement bookmark exportation from Opera is:

Bookmarks Import & Export

• by Martin Sermak - Copyright 2014

Found on Opera's extensions page. I did a search for "bookmarks" from the Extensions page.

"Sorry?"
I am not up to speed on this discussion page system and do not know how to show a quote from a previous reply.

"You need to use an extension."
Could you offer a bit more detail or perhaps some specific suggestions?

With 30.0 yes, as well as several other issues.

We users are still contending with the disaster of Opera 30. It seems it never got out of Beta but was dumped on us any way. Will 31 be more of the same?

With Opera 30.0 I am missing passwords, bookmarks, and the functionality to manipulate what I have remaining. The new glitzy format is just not for me so I will be migrating to another browser, non-chrome based. With all the other issues of the new and improved Opera I am finding it somewhat difficult to move those items remaining from Opera to any other browser. Is that part of the improved set up? or am I overlooking something?

I would like to EXPORT my remaining bookmarks from Opera 30 to either an .html file or into another browser, such as Firefox. How is that accomplished?