blue-green
Example Sentences
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As well as explaining what blue-green algae looks like, the notices will provide guidance on where to find current information about blooms and how to report suspected sightings using the Bloomin' Algae app, external.
From BBC ● Aug. 12, 2026
Satellite images show a visible change in the water between 24 May and 8 August, where a blue-green algal bloom has been confirmed.
From BBC ● Aug. 10, 2026
Right in the heart of the UK capital, Hyde Park's famous Serpentine lake was closed for swimming on Monday because of high levels of blue-green algae.
From BBC ● Aug. 10, 2026
In July 2025, testing found Canvey Lake contained 2.5 million cells of blue-green algae per millilitre, more than 100 times the warning threshold of 20,000 cells.
From BBC ● Aug. 4, 2026
The Resistance tattoo, faded but still visible, is a blue-green shadow on the skin below his throat.
From "An Ember in the Ashes" by Sabaa Tahir
