You look at it as it brushes the cold wet cement. The fin on the end now flimps involintarily. The touch of the concrete sends shivered up your spine as the tail grows ever larger. The burning in your legs gets worse as if the bones inside are dissolving. Realization hits you and with much pain you let your self fall into the water. After a few minutes the burning feeling goes away and your legs flap uselessly behind you. Your tail now propels you about the pool.