go scuba diving in the ocean

A few things stand in my way of this goal, but I’m determined to get there one day.
(a) I’m extremely claustrophobic and freak out just looking through a scuba mask – ON LAND.
(b) I’m not the best swimmer. Not bad, but definitely not good.
(c) I have an inherent fear of open ocean. There’s not a whole lot I love more than the ocean itself, but being out in the open with no protection whatsoever? Scaaaary.
(d) I haven’t the slightest idea how to scuba dive at this point.

I’m a long ways away, but I’ll get there.