Lion Island is located in the
Hawkesbury River, just inside the entrance to Broken Bay and is visible from
Barrenjoey. Close to Ku-ring-gai Chase National Park, it is managed by NSW Parks
and Wildlife. Originally dedicated as a fauna reserve in 1956, it was
reclassified as a nature reserve under the National Parks and Wildlife Act 1967.
The island covers an area of approximately 8 hectares.
Lion Island is listed
on the Register of the National Estate for its scientific importance as a
remnant of the natural environment of Sydney, for the abundance of aboriginal
sites it contains, and because it provides breeding habitat for a number of
shearwaters and little penguins. To protect NSWs biggest colony of little
penguins entry onto the island is forbidden.