Relationships Among Marine Organisms.

This week in Marine Biology, there was an activity where each student had a necklace with the name of some marine organism, and we held parts of a string to represent a food web.  I, was a baleen whale.  In the food web, I was connected to the person labeled "krill;" the marine organism known as krill are very abundant in the Southern Hemisphere, and that's where baleen whales often like to be, because krill is their favorite thing to eat.  In the 11th century, baleen whales were hunted down by people for their oil, which they would use for lamps.  Baleen whales are probably the favorite meal of bull sharks.  There is an interdependency between baleen whales and  phytoplankton.  Krill EAT phytoplankton, so if they weren't around, there would be less to no krill.

Image taken from     http://science.howstuffworks.com/zoology/marine-life/baleen-whale4.htm