Could we see lives "off the ocean" in context?

1.What and when is a Blue and Gold Day?

2,When we say someone lives off the ocean, where does he live? On land? or on the sea, in the ships?

Thanks in advance!
;)

1. As far as I can gather, a Blue and Gold day is a fun day in American schools and colleges. Students, teachers and sometimes parents too participate in competitions, entertainments and fund-raising events. Teams wear either blue of gold clothing. No doubt our American contributors will correct me if I'm wrong.

2. 'To live off the ocean' means to earn a living from the produce of the ocean. A fisherman lives off the ocean. Similarly, a farmer lives off the land.

We had "blue and gold days" at my U.S. high school because those were the school colors. I've not heard of blue and gold days in any other context.

I am thinking it could mean to live near the ocean. It probably does mean "to make a living from" the ocean, but better safe than sorry, no?