Large, open, water-dominated systems (for example, lakes) larger than 8ha.

Wetlands and deepwater habitats within a channel

The area of ocean from the coastline or estuary, extending to the jurisdictional limits of waters (3 nautical mile limit).

Primarily vegetated non-channel environments of less than 8 hectares.

With oceanic water sometimes diluted with freshwater run-off from the land

Wetlands occurring below the surface of the ground and that are fed by groundwater i.e. caves and aquifers.