Changes in seagrass coverage in Cockburn Sound in 1999 were assessed from aerial photographs using modern mapping methods with the aim of accurately determining the magnitude of change in hectares of seagrasses.

Changes in seagrass coverage in Cockburn Sound in 1982 were assessed from aerial photographs using modern mapping methods with the aim of accurately determining the magnitude of change in hectares of seagrasses.

Changes in seagrass coverage in Cockburn Sound in 1967 were assessed from aerial photographs using modern mapping methods with the aim of accurately determining the magnitude of change in hectares of seagrasses.

Changes in seagrass coverage in Cockburn Sound 1972 were assessed from aerial photographs using modern mapping methods with the aim of accurately determining the magnitude of change in hectares of seagrasses.

Changes in seagrass coverage in Cockburn Sound in 1995 were assessed from aerial photographs using modern mapping methods with the aim of accurately determining the magnitude of change in hectares of seagrasses between 1967 and 1999.