Salinity Scale

Use this resource to check the salinity tolerances of humans, crops, livestock, compare your EC results  and understand how salinity can impact on all areas of life


  • All, Fact sheet, Poster, Salinity, Water Science,
  • All Regions,

Waterbugs Higher Level Key

Use this key to identify bugs using the Agreed Level Taxonomy (ALT) method.

Some waterbugs are impossible to identify without a microscope, the best thing about ALT is that it uses features that are visible to the naked eye to identify macroinvertebrates.

For more info on ALT method, go to:

  • Fact sheet, Lower Secondary, Poster, Teacher, Upper Secondary, Water bugs,

Waterbug poster

Use this poster as a field guide to identify waterbugs in your sample, understand the in-stream habitats they prefer and use the sensitivity scores to rate the health of your waterway.

It can be laminated (or similar) and used with white board markers for longevity.


  • Activity Sheet, All, Guide/activity booklet, Lower Primary, Lower Secondary, Poster, Teacher, Upper Primary, Upper Secondary, Water bugs,
  • All Regions,

Salinity in our waterways poster

  • All, Poster, Salinity, Teacher, Water Science,
  • All Regions,