Split-level image of common kelp (Ecklonia radiata) and Sydney Harbour Bridge.

White’s seahorse on swimming enclosure net in Manly Cove.

Brown Sabretooth blenny photographed in an aluminium can at Clifton Gardens, Chowder Bay.

The wreck of a motor bike is regularly explored by divers and snorkelers in the Cabbage Tree Bay Aquatic Reserve.

Carss Bush Park environmentally friendly seawall funded by the Georges River Council. The council is moving towards new fresher development projects that enhance habitat complexity, supplement existing natural foreshore areas and improve biodiversity.

Investigating and measuring transplanted crayweed as part of Operation Crayweed – an initiative to restore this species along Sydney’s beaches.

A pyjama squid photographed at Clifton Gardens.

Dwarf lionfish in invasive pest weed Caulerpa taxifoilia photographed at Clifton Gardens.

Grey nurse shark photographed at Magic Point.