Radiolaria are single-celled ocean creatures the size of a speck of dust, and each one spins itself a mineral skeleton of almost unbelievable geometric intricacy — spheres inside spheres, radiating spines, lattices like blown glass. Haeckel, who first described hundreds of species, arranged them here in flawless symmetry across the plate, and in doing so made one of the most influential images in Art Forms in Nature. When the architect René Binet designed the gateway to the 1900 Paris World’s Fair, he modelled it directly on one of Haeckel’s radiolarians. Proof, drawn from a drop of seawater, that nature engineers beauty at every scale — even the ones no eye can see.

Maker: Ernst Haeckel (1834 to 1919)
Date: 1899–1904
Medium of the original: Painting
Original held by: Kunstformen der Natur
Credit: Kunstformen der Natur · via Wikimedia Commons
Rights: Public domain, verified
Catalogue number: PA-00666

As chosen: 18 x 24 in, art print, classic frame
Picture	18 x 24 in
Outside size	19.6 x 25.6 in
Depth	0.9 in (22 mm)
Weight	[[REAL PROOF NEEDED: shipped weight per size and frame]]
Hanging	[[REAL PROOF NEEDED: hanging hardware Prodigi fits to this frame]]
Material	Enhanced matte art paper, 200 gsm; acrylic glazing
Made in	Charlotte, North Carolina, by Prodigi

Before a size goes on sale, the file is measured against it: pixels per inch at that size, how much of the picture a crop would lose, tone and sharpness. A size that fails is not offered, so there is nothing to choose wrong.

How the print check works

Sizes offered
Size	dpi	Grade	How it fits
8 x 10 in	769	Excellent	Trimmed 8.8%
8 x 12 in	703	Excellent	Trimmed 8.6%
11 x 14 in	559	Excellent	Trimmed 7.2%
12 x 16 in	513	Excellent	Trimmed 2.7%
12 x 18 in	468	Excellent	Trimmed 8.6%
16 x 20 in	384	Excellent	Trimmed 8.8%
16 x 24 in	351	Excellent	Trimmed 8.6%
18 x 24 in	342	Excellent	Trimmed 2.7%
20 x 30 in	281	Excellent	Trimmed 8.6%
24 x 30 in	256	Excellent	Trimmed 8.8%
24 x 36 in	234	Excellent	Trimmed 8.6%
30 x 40 in	205	Excellent	Trimmed 2.7%
36 x 48 in	171	Good	Trimmed 2.7%

Sizes withheld
Size	Why
40 x 60 in	140 dpi; a historical scan is never enlarged

Scanned

2026-10-07

Master file

6,156 x 8,440 px, srgb, Adobe RGB (1998)

Tone

Darks 24, lights 235 of 255; 0% clipped light, 0% clipped dark

Colour

0% vivid

Sharpness

72.28

Notes

Colour profile Adobe RGB (1998), converted to sRGB for the screen and the print
Neutrals lean warm (yellow): the paper and varnish of the original, kept as scanned

Shipping for this piece to a US address is $25.90, the print room’s own rate, charged per piece. Checkout shows the total before you pay.

Every piece is printed after you order it, in Charlotte, North Carolina, and ships from there. For now we ship to US addresses only.

A piece that arrives damaged, misprinted or in the wrong size is replaced at our cost. The details: shipping and returns and replacements.