Birth-alert-tag (BAT) insertion (IMAGE) Arizona State University Caption Insertion of the Birth-Alert-Tag (BAT) via a specialized applicator into the cloacal opening of a pregnant tiger shark Credit Credit: Tanya Houppermans / Blue Elements Imaging Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.