Rubbish, waste, pollution - it comes in all shapes and sizes and from lots of different sources.pest plants.
Well not a robot with hands and legs, but a small boat-like device which collects waste along its path in the water and recycles the plastic it picks up.
The craft has been launched by WWF and Sky Ocean Rescue to help get plastic out of the waterways, seas and oceans.
It's been tried out in other countries already, but Devon is the first place in the UK to use it.
Click to view the video on BBC's website
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