Find out why the secret to eel reproduction has stumped scientists for centuries: | TED-Ed

Did you know that when eels decide it's time to mate, their stomachs dissolve and their reproductive organs form for the first time in its place? These creatures are complex, which is why scientists are eager to understand their unique life cycles. Researchers have tracked eels to the Sargasso Sea where they are likely spawning, but we are still missing pieces to the puzzle. There is footage showing adult European eels sticking close to the sea floor on their long journey across the ocean, so th