After talking about it and wondering should I or shouldn't I...

I just registered for my first Tri.


It'll be July 26th, .5m swim, 27.5m bike, 7m run, Heart o' Dixie Tri in Philadelphia, MS.



I've been riding for about a year or so and have fairly good distance and the run isn't that big of a deal but i'm scared to death of the swim.

I haven't swum (?) ever for a considerable distance. Aside from the obvious (getting wet) what should i work on so as not to embarass my self come the 26th?