Photo de stock - The Audubon Center in the lullwater section of the Prospect Park Lake in Brooklyn in New York The surface of the lake has been covered with the plant Azolla caroliniana, a native species, which would normally die during the cold winter However, this past winter was not harsh enough to kill the plant hence it is flourishing this summer

Photo de stock: The Audubon Center in the lullwater section of the Prospect Park Lake in Brooklyn in New York The surface of the lake has been covered with the plant Azolla.

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