Above, two reef building corals (millepora), a diving bird, a narwhal (monodon), a mollusc and a musk deer; below, a small warbler (whitethroat), two fish, a sea serpent, a conger eel, two molluscs (murices) and a mureana. Engraving by Heath.

Licence: Public Domain Mark

Credit: Above, two reef building corals (millepora), a diving bird, a narwhal (monodon), a mollusc and a musk deer; below, a small warbler (whitethroat), two fish, a sea serpent, a conger eel, two molluscs (murices) and a mureana. Engraving by Heath. Wellcome Collection. Source: Wellcome Collection.