Limestone Islands
Introduction


The **Limestone Islands** are two islands, **North Limestone Island** and **South Limestone Island**, in [Georgian Bay](/wiki/Georgian_Bay "Georgian Bay"), [Ontario](/wiki/Ontario "Ontario"), Canada,  west of [Parry Sound](/wiki/Parry_Sound "Parry Sound").

They are unusual islands in many respects, for their geography is quite different from that of the other 30,000 islands in Georgian Bay. Most of the islands in Georgian Bay are made of [granitic](/wiki/Granite "Granite") bedrock, whereas the Limestone Islands are made, as their name reflects, completely of [limestone](/wiki/Limestone "Limestone"). The South Island has a flat terrain inhabited by low vegetation, which is reportedly much more friendly that its sister island, the North Limestone, which is infested with [poison ivy](/wiki/Toxicodendron_radicans "Toxicodendron radicans").

South Limestone Island is known for being host to thousands of birds, the majority of which consist of [seagulls](/wiki/Seagulls "Seagulls") and [common terns](/wiki/Common_tern "Common tern").
The Limestone Islands are a nature reserve under the auspices of [Ontario Parks](/wiki/Ontario_Parks "Ontario Parks").


What are the Limestone Islands?