Marine and Coastal Environment
Mosman has 24 kilometres of coastline including attractive beaches and tranquil bays rimmed by scenic sandstone and bushland. Excellent access, facilities and the calm waters of sheltered bays render Mosman a popular place for activities like boating, swimming, diving and fishing.
Introduced or exotic species that are not native to Australia may become established around Mosman and become marine pests affecting the environment and our enjoyment of the coast.
The marine pest Caulerpa taxifoli has been identified in areas of Balmoral, Chinaman’s Beach and Chowder Bay. This pest is not known to affect human health but can spread rapidly and potentially alter marine habitats.
Stop the Spread of Marine Pests
- Inspect anchors, ropes and other gear for marine pests.
- Inspect fishing equipment; nets, traps and fishing lines before use.
- Inspect dive gear such as wetsuits bags and other equipment before use.
- Collect fragments of Caulerpa taxifolia and other pests you have accidentally picked up. Seal in a plastic bag and dispose of in a bin where they can not re-enter a waterway.
Any sightings of suspected marine pests should be reported to the NSW Department of Primary Industries 24 hour reporting hotline: 4916 3877.
Find out more about marine pest management at Marine Pests .
How You Can Look After Our Valuable Environment
- Fish responsibly and adhere to protected areas and restrictions: Recreational fishing rules and regulations
- Buy sustainable seafood – AMCS (Australian Marine Conservation Society)
- Leave marine creatures in their natural habitats with plenty of space and minimal disturbance
- Report introduced marine pests.
- Report illegal or suspect fishing activities to the Fisher’s Watch phone line: 1800 043 536
- Become a HarbourCare Volunteer
- Volunteer on Clean Up Australia Day
Spills and pollution
By reporting spills and pollution quickly, the appropriate response can be undertaken rapidly and minimize the harm from the incident. Be a responsible citizen and report any pollution incidents, or anything unusual you observe to Mosman Council’s Rangers or Environment Officers.