The Toothing Gods do not smile upon me

Today I was driving around trying to discover new spots. The spots that I did come across were already finished ponds that did have layer in them, but they had already been walked by someone else and I only found the little scraps that they left behind. Then I went back to another development that was finished, but one area had patches of layer spread out everywhere. This too had already been walked by several people, but the area was not entirely cleaned out. I found two reef sharks and a giant thresher all in one spot on the same day. What are the odds of that? Too bad they weren’t complete though.