Future too warm for baby sharks (IMAGE) ARC Centre of Excellence for Coral Reef Studies Caption In warmer waters, shark embryos grew faster and used their yolk sac quicker, which is their only source of food as they develop in the egg case. This led to them hatching earlier than usual. Credit M. Johnson Usage Restrictions For media stories with credit to the photographer as stated in the caption. Please note this is single use with this story only, not for any other story. No archival permissions are granted. License Licensed 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.