The Greater Argonaut (Argonauta argo) is a very unusual octopus, that travels the oceans in an exquisite papery case. And many of its secrets were uncovered by a very unusual (for her time) woman - the remarkable Jeanne Villepreux-Power - one of the 19th century's leading scientifically-minded naturalists.

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Music

Opening & Closing Themes: Running Waters and Acoustic Meditation by Audionautix (Jason Shaw), from audionautix.com. CC BY 3.0.

plus modified versions of:

Hey Ruth Instrumental Version, Pompeii No Vocals, The Pawnbroker's Stepdaughter Instrumental Version and Bloom Instrumental Version by Josh Woodward, CC BY 4.0