Watch: "Millions and millions" of hermit crabs on beach

(CBS News) The Caribbean is known for its beautiful beaches. Just don't go on a day like this one. Watch as "millions and millions" of hermit crabs journey on their annual migration and take over a beach in this remarkable video.

Videographer Steve Simonsen was on the scene to document this incredible sight. As he describes it, "[My friend] Pam told me it was a migration of soldier crabs also called hermit crabs and there were millions and millions of them she likened it to the migrations of Serengeti. I didn't need to hear anymore, I loaded my car with cameras and was out the door. Pam told me that this began this morning at sunrise at Nanny point near Concordia."

This stunning migration took place last week on St. John Island, part of the Virgin Islands.