David Gallo: Underwater astonishments and Edith Widder: The weird world of bioluminescence are two TED presentations that talk about some under water creatures that do some amazing things. Some of the creatures emit light, others change their color to protect themselves from their predators. These talks can be shared with students of all ages. (Underwater astonishments – 5:25; The weird world of bioluminescence – 12:46)
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