Анотация: This report describes the onset of goiter in several species of shark following the addition of ozone to a touch pool. A detailed description of a female brown-banded bamboo shark (Chiloscyllium punctatum) that was presented with multinodular goiter is provided. Four other brown-banded bamboo sharks and 11 white-spotted bamboo sharks (Chiloscyllium plagiosum) housed in the same system developed clinical disease consistent with goiter, but two zebra bullhead sharks (Heterodontus zebra) did not