Here’s a delightful if not eerie video of a hermit crab migration filmed on St. John in the U.S. Virgin Islands. It’s hard to imagine how photographer Steve Simonsen managed to film all of these crabs without stepping on any of them, but his close-ups show thousands if not millions of clattering shells and legs in hi-definition.
And here’s another video that discusses a softer, fuzzier migration. Though Charles Darwin is often associated with his work in the Galapagos, he also worked in the Americas and tracked a variety of species that moved from what is now present day Las Vegas to the Andean plateau, such as camels. At an Academy of Sciences event, curator Gary Williams talks about Darwin’s writings in Voyage of the Beagle and how he helped modern zoologists formulate an understanding of migrations.