Documentary Planet Garbage

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Carl Zeiss Jena Sonnar 50mm F2, Contax RF Mount
 
Are these floating in a lake full of algae - or what's the green stuff?
That's known as the "green carpet" which descends from and covers much of the canals in East London when hot weather decends, which is ironic seeing how c*&p the weather has been here over the last 2 weeks. Apparently not "algae", but duckweed although, yes, it sure looks like algae to me. While it can be a nuisance on canals, it is apparently harmless to humans and is an important high protein food source for waterfowl. You won't get me testing that "harmless to humans" theory out though.
 
That's known as the "green carpet" which descends from and covers much of the canals in East London when hot weather decends, which is ironic seeing how c*&p the weather has been here over the last 2 weeks. Apparently not "algae", but duckweed although, yes, it sure looks like algae to me. While it can be a nuisance on canals, it is apparently harmless to humans and is an important high protein food source for waterfowl. You won't get me testing that "harmless to humans" theory out though.
When similar accumulates here, it is regarded as damaging to the life below, due to lack of sunlight getting through and usually they try to get rid of it (but it's hardy stuff)
 
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