I believe that they were just there cruising the flats. They were startled and swam right under my board. Most were 4-5 footers. I had one approach me once when fly fishing(wading), about 8' long. I was about 100 yards off shore. Fortunately it left me alone when I slapped the rod on the water.
I got bit once on the knee while fishing by a 3' blacktip. After three days of pain and suffering, the shark died...
