Scientific Illustration

Narwhal anatomy including unusual two horned specimens by BioDivLibrary on Flickr.

Herrn Johann Anderson, I.V.D. und weyland ersten Bürgermeisters der Freyen Kayserlichen Reichsstadt Hamburg, Nachrichten von island, Grönland und der Strasse Davis, :.
Hamburg, :verlegts Georg Christian Grund, Buchdr.,1746..
biodiversitylibrary.org/page/41333998

invisiblestories:

“Red snow” along cliffs in Greenland, from John Ross’ A Voyage of Discovery (1819)

Watermelon snow or red snow is caused by the presence of the algae Chlamydomonas nivalis

(via adventures-of-the-blackgang)