English Samuel H. Gruber Cited by user Nbarth on 05 Mar 2017 Dr. Samuel H. Gruber is a shark biologist and founder of the American Elasmobranch Society.
English Shark repellent Cited by user Nbarth on 05 Mar 2017 A shark repellent is any method of driving sharks away from an area. Shark repellents are a category of animal repellents.