Cephalopod Week

Cross section of a chambered nautilus shell showing its golden-brown spiral chambers, overlaid on blue geometric diagrams of rectangles and spirals.

Myth or math? Is the nautilus shell’s golden ratio real?

Grab a ruler, crunch the length-to-height ratios, and use the Fibonacci sequence to test whether this famous spiral is truly golden.

A fish emits a cartoonish green cloud of scent. Nearby, a chambered nautilus has a thought bubble with hearts.

Educational Resource

Can a living fossil learn new tricks? Meet the nautilus!

With poor eyesight, the chambered nautilus hunts by smell. Explore how a blue-light experiment revealed mysteries of the cephalopod’s memory.

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incap_ses_1185_2233503	session	No description
incap_ses_1185_823975	session	No description
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incap_ses_1319_2233503	session	No description
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incap_ses_1364_823975	session	No description
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incap_ses_198_2233503	session	No description
incap_ses_198_823975	session	No description
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incap_ses_340_823975	session	No description
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incap_ses_8076_823975	session	No description
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incap_ses_867_2233503	session	No description
incap_ses_867_823975	session	No description
incap_ses_867_972453	session	No description
incap_ses_9117_2233503	session	No description
incap_ses_9117_823975	session	No description
incap_ses_9117_972453	session	No description
li_gc	2 years	No description
loglevel	never	No description available.
msToken	10 days	No description