London - June 19 2018: Volunteers cleaning the southern shores of the Thames from waste during low tide.
Daniel Lange/Shutterstock
It’s not just the ocean we need to worry about – plastic is accumulating in the world’s rivers, too.
The irukandji jellyfish, up close.
Source: Lisa Ann Gershwin/AAP
The irukandji jellyfish can be deadly and particularly hard to trace. However, emerging technology offers a solution.
The aquatic weed water hyacinth is causing major problems in Ethiopia’s Lake Tana.
Shutterstock
Lake Tana in Ethiopia has been massively affected by the invasive weed, water hyacinth. Control methods are available but there are challenges.
Pretty, but also pretty nasty.
Willem van Aken/CSIRO/Wikimedia Commons
With El Niño ramping up, Australia is in for a long, hot, dry summer - perfect conditions for blue-green algae. And that innocuous-looking pond scum can pack a toxic punch if you’re not careful.
Megamelus scutellaris insects fighting aquatic weeds.
Philip Weyl
Biological control is the best way to combat aquatic weeds in African water.