Cyanotype print of delicate seaweed on a blue background.

Title: Ulva latissima,Artist: Anna Atkins (British, 1799–1871),Date: ca. 1853,Medium: Cyanotype,Dimensions: Image: 25.3 x 20 cm (9 15/16 x 7 7/8 in.),Classification: Photographs,Credit Line: Gilman Collection, Purchase, The Horace W. Goldsmith Foundation Gift, through Joyce and Robert Menschel, 2005,Object Number: 2005.100.557 (141),Curatorial Department: Photographs. http://www.metmuseum.org/art/collection/search/291637

The Metropolitan Museum of Art