The Snot and the Whale

Why did T. Rex have such tiny arms? That’s what our listener Nora wants to know. We’re going to find out why the biggest, most powerful predator to ever walk the Earth did it with a teeny tiny set of arms. Scientists have been coming up with answers for this question for decades ...  Show more

In this final mailbag episode of Summer 2026, Marshall and Lindsay address two listener questions, and learn about a surprising twist of evolution. Plus, listener reviews and comments! To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free ...  Show more

Baleen whales sing. Toothed whales click. But how and why do they make these musical sounds?Join Molly and co-host Tyler as they dive into the wonderful world of whale sounds. First, they run into Anna Goldfield on her way to audition for a whale choir. She teaches them about the ...  Show more

Narwhals are sometimes called “the unicorns of the sea” because of their giant spiral tusks. It turns out that those tusks are actually a big tooth that grows right out of the narwhal’s mouth! One of our listeners wanted to know if narwhals were born with a hole in their head for ...  Show more

The whale. 

How do whales sleep? On the sea-bed of course. But jokes aside… Marine mammals are facing a challenge: they need to breathe air regularly, so what do they do when it’s time to sleep? I’m jumping into the ocean with my brand new SCUPA gear to find out!Do you have a fun animal myst ...  Show more