1. Marine Biology & Habitat Biotic Factors.

2. Symbiosis “ The close and often long-term interactions between biological species.” Symbiosis can be divided into 3 separate parts; Mutualistic Commensal Parasitic

3. Mutualistic The interaction in which both organisms have a fitness benefit. An example of a mutualistic relation is the Clown Fish and the Anemone. The sea anemone has stinging tentacles, that the clown fish is immune to due to a thin mucus layer on its skin. This provides a safe home for the clown fish. In return the Clown fish scare of Butterfly fish, which eat sea anemones. Mutual 

4. Commensal The relationship between two organisms where one organism benefits, but the other is unaffected. Barnacles, are arthropods, closely related to crabs and lobsters. Barnacles sometimes attach themselves to animals, such as turtles or whales. They do this to try to move to more nutrient-rich waters. Commensal 

5. Parasitic Relationship between two organisms where one organism, the parasite, benefits at the expense of the host. Copepod crustaceans, commonly referred to as skin crawlers, live on the surface of fish, in the skin and gills. They are a common parasite of the Australian Kingfish. Parasite 

6. Salt Regulation Fish can drink the salt water they live in, as the salt is filtered out through their gills. Also, seabirds can drink the salt water, and the salt is filtered out through the “Salt Gland” in the nasal cavity. It is shaken or sneezed out by the bird. Whales do not eat the salt water, they receive their water from what they eat.

7. Temperature Many marine animals are cold blooded and automatically adjust to their surrounding temperature. Marine mammals have an insulating layer of blubber under their skin to help them maintain a warm core temperature even in cold waters.

8. Water Pressure Water pressure increases 15 pounds per square inch for every 33 feet of water. Most fish don’t often change depths extremely but some far-ranging animals such as whales dive nearly 1.5 miles deep. They can do this as their lungs and rib cage can collapse as the pressure increases.

9. Footnotes from images Google images: http://www.viecouture.net/my-first-snorkeling- experience/&usg=__iiTu_HOKqd94XTlMaYba99xI0Ng=&h=300&w=400&sz=71&hl=en&start=44&itbs=1&tbnid=ixWk7 VEyXJEjWM:&tbnh=93&tbnw=124&prev=/images%3Fq%3Dclownfish%2Band%2Banemone%26start%3D40%26hl%3De n%26safe%3Dactive%26sa%3DN%26gbv%3D2%26ndsp%3D20%26tbs%3Disch:1 Google images: http://www.arkive.org/media/FA/FA970FA5-9867-4E71-BC7F- 3E7D5F07555C/Presentation.Large/photo.jpg&imgrefurl=http://www.arkive.org/green-turtle/chelonia-mydas/image- G59768.html&usg=__oNw7a-tMjmPKPF_gwXdE- 6yS6nk=&h=433&w=650&sz=95&hl=en&start=20&itbs=1&tbnid=yBbhnkhnTocuaM:&tbnh=91&tbnw=137&prev=/images %3Fq%3Dbarnacle%2Bon%2Bturtle%26hl%3Den%26safe%3Dactive%26gbv%3D2%26tbs%3Disch:1 Google images: http://www.montereybayaquarium.org/storage/animals/520x260/Copepod.jpg&imgrefurl=http://www.montereybayaquarium. org/animals/AnimalDetails.aspx%3Fid%3D778798&usg=__nvfBw_avfszN3v4CrEZu5twXDTI=&h=260&w=520&sz=41&h l=en&start=40&itbs=1&tbnid=07vuXRw8MFcQjM:&tbnh=66&tbnw=131&prev=/images%3Fq%3Dcopepod%26start%3D2 0%26hl%3Den%26safe%3Dactive%26sa%3DN%26gbv%3D2%26ndsp%3D20%26tbs%3Disch:1 Google images: http://people.eku.edu/ritchisong/554images/Salt_gland.jpg&imgrefurl=http://people.eku.edu/ritchisong/bird_excretion.htm& usg=__GFXe_IsCQBRvDkBqnRUOpLrIBuU=&h=420&w=600&sz=131&hl=en&start=2&itbs=1&tbnid=WUQoUE6GFAo qmM:&tbnh=95&tbnw=135&prev=/images%3Fq%3Dsalt%2Bgland%26hl%3Den%26safe%3Dactive%26gbv%3D2%26tbs %3Disch:1

10. References http://marinelife.about.com/od/marinelife101/p/CharMarineLife.htm- “Characteristics of Marine Life” (Jennifer Kennedy), Retrieved April 13, 2010 http://marinelife.about.com/od/marinelife101/p/CharMarineLife.htm- http://en.wikipedia.org/wiki/Mutualism_(biology)- “Mutualism” (D. G. Boucher, S. James, K.Kresler) “The Ecology of Mutualism”, Retrieved April 12, 2010 http://en.wikipedia.org/wiki/Mutualism_(biology)- http://en.wikipedia.org/wiki/Symbiosis- “Symbiosis” ( Ahmadjian, Vernon; Paracer, Surindar ) “Symbiosis: an introduction to biological associations, Oxford”, Retrieved April 12, 2010 http://en.wikipedia.org/wiki/Symbiosis- http://en.wikipedia.org/wiki/Commensalism- Commensalism” (D.H. Benzing) “ Biology of the Bromeliads”, Retrieved April 12, 2010 http://en.wikipedia.org/wiki/Commensalism- http://en.wikipedia.org/wiki/Parasitism- “Parasitism” (H. Charles, J. Godfray) “Parasitoids”, Retrieved April 12, 2010 http://en.wikipedia.org/wiki/Parasitism-