Atlantic Humpback Dolphin (image) Wildlife Conservation Society Share Print E-Mail Caption A mother-and-calf pair of Atlantic humpback dolphins. A group of scientists now considers this little-known dolphin to be among the Africa's most endangered mammals. Credit T. Collins/WCS Usage Restrictions One-time usage only Share Print E-Mail 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.