Rattlesnake Island is an 85-acre (34 ha) island located in Lake Erie near Put-In-Bay, 11 miles (18 km) northeast of Port Clinton, Ohio. It is part of Put-in-Bay Township, in Ottawa County. It is one of several islands known as the Lake Erie Islands. The name Rattlesnake comes from the actual rattlesnakes that formerly inhabited the island, ( and supposedly also from the overall shape of the island — two small islets near the northern tip were said to resemble a rattlesnake's rattle).