What wordings should be put in the shirt other than the logo?

what types of fishes do you want to see in the design

shark should be the only fish - but any/all shark are welcome

No other words are necessary. But in case yours (or other) designs require text, sans-serif would be desired

if your design includes a graphic on the back of t-shirt, the graphic should be one of the following:
1) map of Charleston SC
2) graphic of Sullivans Island Lighthouse
3) images and names of different species of shark