Try this tough aquatic pest quiz.Marine pests can hitch a ride to Australia on boat and ship hulls, and in the ballast water of ships. All these pests threaten our native biodiversity, commercial fisheries and aquaculture. So it’s important to know how you can fish out the FERALS.Can you spot the aquatic pest?European Green Crab (Carcinus maenas)Can you spot the aquatic pest? Caulerpa (Caulerpa taxifolia)Can you spot the aquatic pest? Water Hyacinth (Eichhornia azurea)Can you spot the aquatic pest?Northern Pacific Seastar (Asterias amurensis)Can you spot the aquatic pest? Asian Green Mussel (Perna viridis)Can you spot the aquatic pest in these New Zealand waterways?Didymo or Rock Snot (Didymosphenia geminata)BIOSECURITY CURIOUSYou clearly are curious about aquatic biosecurity. Play again to boost your score and challenge your friends and family to play the quiz. Thanks for being part of our National Biosecurity Challenge.Australia's aquatic environment depends on all of us.APPRENTICE BIOSECURITY WARRIORYou clearly have some great skills. Play again to boost your score and challenge your family and friends to take the quiz.Thanks for being part of our National Biosecurity Challenge. Australia's aquatic environment depends on all of us.BIOSECURITY WARRIORYou clearly love all things aquatic. Keep doing a great job. Now challenge your family and friends to try the quiz.Thanks for being part of our National Biosecurity Challenge.Australia's aquatic environment can depend on you! PLAY: Fish Out The Ferals Get hooked on protecting our aquatic environments. Dive in and find out how!