Seal Island

Seal Island is a small limestone island in Shoalwater Islands Marine Park off the coast of Rockingham, Western Australia, about 1 kilometre offshore in Shoalwater Bay. It is an A-Class nature reserve managed by the Department of Biodiversity, Conservation and Attractions. The island is notable as a haul-out site for Australian sea lions and a breeding colony for Australian pelicans and other seabirds, and is viewed by boat rather than visited on foot.

Visitors can expect to view Seal Island from the water on licensed wildlife cruises, charter boats or kayaks departing from Mersey Point, Shoalwater. The island itself is closed to public landing. From the boat you can see a low limestone island with sandy beaches and low vegetation, Australian sea lions resting on the shore, large flocks of Australian pelicans and cormorants, and surrounding turquoise waters of Shoalwater Islands Marine Park. There are no buildings, paths or facilities on the island.

Seal Island is part of the Shoalwater Islands chain of Holocene limestone islands formed by coastal dune systems. It has long been recognised as significant seabird and marine mammal habitat and is gazetted as an A-Class nature reserve vested with the Conservation and Parks Commission and managed by the Department of Biodiversity, Conservation and Attractions for conservation.

The Shoalwater Bay and islands lie within Noongar Country and are valued for their natural heritage, marine wildlife and island ecosystems as part of Shoalwater Islands Marine Park.