This free smartphone app is a library in your pocket! 'That's Invasive!' contains information on the biology and ecology of invasive species, as well as ID tips and an image gallery. At the touch of a finger you can now easily identify, photograph, and report over 40 invasive non-native species. More information is available here.
UPDATE: Now including estuarine species!
Free factsheets containing information on 5 key estuarine invaders (English only)
Alien invaders in estuaries
A free fold-out guide to invasive non-native species in estuaries.
Available in 3 languages: