50.0 MB (3.2 MB compressed)
6338 x 2757 pixels
53.6 x 23.4 cm ⏐ 21.1 x 9.2 in (300dpi)
NICOLLE R. FULLER / SCIENCE PHOTO LIBRARY NICOLLE R. FULLER / SCIENCE PHOTO LIBRARY
Butterfly speciation, illustration. Swarm of diversely patterned Heliconius butterflies that appear to be many different species, but are actually just two species known for mimicry. This is an illustration of the problem of how to define a species.
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