Relationships Among Marine Organisms

Marine Food Web In Marine Bio this week our class did a project on a food web of marine life. In this activity i played an anchovy. The anchovy eats other smaller organisms but is mainly food for squid and sharks. If the anchovy was to disappear from the food web then the squid population would shrink a lot, while the organisms that anchovies eat would grow a lot. Phytoplankton In class we also did another assignment where we viewed diatoms through a microscope.By doing this lab we learned a lot about diatoms. We learned that diatoms have a very good reflective quality about them. We also learned that diatoms are used in toothpaste, filters, pesticides. Energy Flow There are different tropic levels and as you go up the food chain you find that there are bigger and bigger animals that are at the top of the food chain. Human Impacts Humans can disturb the marine food web by over hunting. If they over hunt one food item then it could upset the whole balance of the food web and cause one organism to perhaps go extinct. This would cause a collapse in the whole system.If one organism goes extinct then that could cause a massive growth in another population of organisms and then that causes a whole disturbance within the system.