A reader sent us a picture of two smooth, black, worm-like creatures that he found by a swimming pool, which he thought might be leeches. The leeches, if they are leeches, were on a ledge right on the side of the pool, a little above the water line. They reader said they moved very slow by expanding and contracting, and that they are black on top, but a lighter, tan or brownish color on the bottom. The reader was only wondering if he found leeches, so we’ll limit ourselves to the matter of identification. Did our reader find leeches by the pool?