See the World's Only Edible Bioluminescent Species

Fishermen trawl a net containing a large number of glowing firefly squid in central Japan.
Fishermen trawl a net containing a large number of glowing firefly squid in central Japan.
NORIAKI SASAKI/AFP/Getty Images

The firefly squid, or Watasenia scintillans, is the only commonly edible bioluminescent creature in the world. In Japan, the species is famous for the light show it puts on along the coast when it spawns each spring. That's when the fishermen of Toyama Bay, in central Japan, go out in the dead of night to harvest the squid by the bucketful. The fruits of their labors end up salted, grilled, boiled, or served raw in restaurants around the country. You can learn more about the firefly squid, and their harvest, in the video from Great Big Story below:

21 Widespread Myths About Animals, Debunked

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YouTube

No, that nasty-looking wart on your finger didn't come from a toad. And yes, giraffes really do need more than 30 minutes of shut-eye in a day. Chances are that one of the "facts" you've come to know about your favorite animal isn't a fact at all. (Cats can swim and dogs do see colors—though in a different way than you probably do.)

Since our fuzzy, furry, finned, and winged friends can't always speak for themselves, Mental Floss Editor-in-Chief Erin McCarthy is here to clear up 21 widespread animal myths. So gather up your pets and check out this week's all-new edition of the Mental Floss List Show. You can watch the full episode below.

For more episodes like this one, be sure to subscribe here.

17 Signs That You’d Qualify as a Witch in the 1600s

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YouTube

Are you a woman? Do you have a birthmark? Do you enjoy spending quality time with friends without a chaperone? You might just be a witch! At least that's how the thinking went in the 1600s, when now completely normal behaviors could have seen you accused of witchcraft.

Grab your broom and the pointiest black hat you can find, and join Mental Floss editor-in-chief Erin McCarthy as she shares 17 signs that might have branded you a witch during the 17th century in this week's all-new edition of the Mental Floss List Show. You can check out the full episode below:

For more episodes like this one, be sure to subscribe here!

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