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 cooped up will make anyone irritable, eventually

Find out the real science behind this question on Tumble’s companion episode: What If Fish Had Legs? A huge thanks to Lindsay and Marshall for joining us on this special occasion! Find them at sciencepodcastforkids.com

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What If World is made by Eric and Karen O'Keeffe. Our theme song is by Craig Martinson and our podcast art is by Jason O’Keefe. This episode features editing and sound design by Dessiree McFarland. Episode artwork by Karen O'Keeffe. Additional songs and sound effects from audioblocks.com.