Dead sponge (IMAGE) Frontiers Caption Dead dark stinging sponge (Sarcotragus foetidus) Credit Fikret Öndes Usage Restrictions Credit must be given to the creator. License CC BY 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.