Https://www. ted. com/talks/david_gallo_underwater_as tonishments 1. Gallo spends his short talk examining amazing underwater creatures and pointing out their adaptations. He mentions two squid that are fighting. What part of his description of these squid is an adaptation? Why might this be useful for the male squid?

2. What adaptation does Gallo describe when talking about the octopus?

3. Gallo mentions several things that sea creatures use bioluminescence for that were also mentioned by Widder in the previous video. Describe the similarities and differences between the two talks.

4. Given the various ways underwater creatures use bioluminescence, discuss which you think would be most useful and why?