Many creatures, including black swans and cockles, play their part in the complex ecology of Porirua Harbour.
What effect do the swans have on the eel grass (zostra) beds?
How often is the cockle count done?
Do swans live on the harbour all year round?
What is a moult?
When do swans feed?
Creatures Great & Small
The Rural Catchment
Are there any maps of how the area would have looked as a river valley?