Glow-in-the-dark sharks and other stunning sea creatures
Just a few meters below the waves, marine biologist and explorer-photographer David Gruber discovered something amazing — a surprising new range of sea creatures that glow in many colors in the ocean's dim blue light. Join his journey in search of biofluorescent sharks, seahorses, sea turtles and more, and learn how these light-up creatures could illuminate a new understanding of our own brains.
Under the sea
Watch more TED Talks about the wonder of our oceans -- and the threats facing them.
Some are longer than a blue whale. Others are barely larger than a grain of sand. One species unleashes one of the most deadly venoms on earth; another holds a secret that’s behind some of the greatest breakthroughs in biology. David Gruber investigates the secret powers of jellyfish.