Why Are There 30 MILLION Horseshoe Crabs On This East Coast Beach? (feat. @KQEDDeepLook)

Thanks to ‪@KQEDDeepLook‬ for collaborating on this episode. Check out their episode here -    • Once a Spawn a Time: Horseshoe Crabs Mob t...   Horseshoe crabs spend most of their lives in the ocean depths. But every May and June, their spindly little legs will carry them 60 miles or more to congregate on sandy beaches up and down the Atlantic coast. Nowhere are their numbers greater than in Delaware Bay. As many as 30 million crabs — a population the size of Shanghai, China — descend on these shores. What are they all up to? Subscribe to PBS Terra! - https://bit.ly/3mOfd77 ********************************************** Hosted by Joe Hanson from It's Okay to be Smart, Overview uses incredible 4k drone footage to reveal the natural phenomena shaping our planet from a 10,000-foot view—literally. ***** PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateTerra *****