All those tiny spots that look almost like tadpoles in this video are actually blacktip sharks. These sharks are in the process of migrating North to cooler waters but for some reason thousands of them have been congregating just off the shore in South Florida near Palm Beach.
via @sharkmigration
Researchers at Florida Atlantic University have been studying this migration for the last few years. They will be catching and tagging the sharks as they migrate. Professor Stephen Kajiura told TCPalm that the sharks are a little bit late this year, they normally migrate at the end of January. According to Kajiura, the sharks are probably swimming so close to the coast because they are after a certain kind of fish or they are avoiding other larger sharks.