swimming?

Miranda
Hey ladies so my nursing class will at some point this semester or so my teacher said will go with the elementary schools special Ed program to the YMCA and go swim for a day. Sounds awesome right? Well I had a hard few years and have a bunch of scars on my leg that have faded a lot but are still visible at times. Like when I swim. When a certain light hits it. When a billion degrees or 0 degrees outside. She said we could wear regular shorts if we wanted too or our suits weren't appropriate but all of mine are like Nike running shorts. They will just float around my legs. Any ideas to hide them? 
*please no judgement I've been diagnosed with depression and anxiety and I'm taking medication while getting the proper help I need*