Friday, February 12, 2021

The evolution of crabs from PBS Eons and SciShow for Darwin Day

Happy Darwin Day! To celebrate, I'm continuing the tradition of sharing videos about evolution from PBS I started in 2016. Like the past three years, this one is from PBS Eons, Why Do Things Keep Evolving Into Crabs?

For some reason, animals keep evolving into things that look like crabs, independently, over and over again. What is it about the crab’s form that makes it so evolutionarily successful that non-crabs are apparently jealous of it?
Not only do crustaceans keep evolving into crab-like forms, but crabs keep invading the land. A bonus video from SciShow examines that, Crabs Keep Turning Into Land Animals!

When a species evolves from living in water to living on land it’s called terrestrialization, and it’s not an easy task. Yet crabs keep making the jump from sea to shore. Why? And how do they do it?
Behold the power of evolution!

Stay tuned for posts about impeachment and Lunar New Year. As I wrote yesterday, today is a busy day on this blog!

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