What If Fish Had Legs?

Who invented the peanut butter and jelly sandwich? And how did it become one of the most famous lunches in America? In this episode, a question from listener Leila sends us on a trip through history to find out how peanut butter, jelly, and sliced bread came together to make the ...  Show more

Why do humans usually have five fingers on each hand? And what if one day, we could grow a new finger if we lost one? In this episode, a question from six-year-old listener Ayla sends us on a journey from tiny developing embryos to one of the most amazing animals on Earth: the ax ...  Show more

On our 200th episode, Mr. Eric’s friends Lindsay and Marshall from Tumble get swept away to What If World… again! Can they enjoy living in an air tank while their fish grows legs and tries to take care of them? Lessons include: grownups have it rough sometimes, too; feeling coop ...  Show more

Jellyfish are some of the most unique creatures on the planet. They’ve been around longer than the dinosaurs. They don’t have brains, bones or blood. And they’re not even fish! So what are they?

Float along with Molly and cohost Rosie as they learn about the differen ...

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Do you ever watch Finding Nemo and wonder about the scary-looking fish with the gnarly teeth and the light on its head? Well then you’ve come to the right place! This week, we’re talking anglerfish! Marine biologist Dr. Mackenzie Gerringer and Jonathan spill the tea on what’s goi ...  Show more