tiger baby teeth! (VIDEO) Arizona State University This video is under embargo. Please login to access this video. Caption Ultrasound of a pregnant tiger shark showing an embryonic tiger shark; the shark’s mouth and teeth are clearly visible. Ultrasounds were used in the study to identify pregnant sharks. Credit Credit: James Sulikowski and Neil Hammerschlag 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.