Question: What  is a 17 acre island separating Long Island and Block Island sounds, that has A ground-dwelling coastal beach grass herbivore endemic of the Meadow Vole ?
Sentence (from "Gull Island vole"): A ground-dwelling coastal beach grass herbivore endemic to Great Gull Island, New York, it disappeared after habitat destruction for naval fortifications in August 1898 for the Spanish–American War.
Relevant evidence: Yes