“Brinicles”, the terrifying icy finger of death

A brinicle is formed when brine (extremely salty water, denser and colder than the sea water around it) sinks from the ice above to the ocean floor, creating a frozen hollow “sheath” in the process. After hitting the seabed, it forms a frozen “river”, killing everything in its path. Run little starfishes, run! Via geekologie.com and geekosystem.com