Spiny dogfish (Squalus acanthias) (IMAGE) Marine Biological Laboratory Caption Spiny dogfish (Squalus acanthias), a small shark species, at the Marine Biological Laboratory, Woods Hole. Credit Etty Bachar-Wikström Usage Restrictions Use with credit 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.