The document discusses the extreme environment of the deep ocean. It notes that the Mariana Trench is the deepest part of the ocean at 11,033 meters deep. It also discusses how the high water pressure, low temperatures, and unique gas levels can negatively impact human respiratory, muscular, and nervous systems if divers go too deep without proper equipment. Proper scuba gear, wet suits, oxygen tanks and deep sea submarines are needed to allow humans to explore depths beyond what the naked body can withstand.

1. Deep Ocean: Extreme Environment By: Jim Fields

2. Mariana Trench Deepest part of the ocean and deepest part of the earth 11,033 meters Deep (36,201 feet)

3. Deep Ocean Facts Water Temperature 2-4 degrees Celsius Pressure ranges 200-600 atm

4. Human Limitations 14.7 PSI ( pounds per square inch) a human weighs Under water every 33 feet traveled another atmosphere is felt by the human diver (14.7 PSI) For example, 66 ft = 44.1 PSI Divers can withstand up to 3-4 atmospheres of pressure

5. Body Systems Affected Respiratory Muscular Nervous

6. Respiratory System Nitrogen Narcosis is experienced when divers with oxygen tanks dive lower than 160 meters Decompression sickness, tremors, myoclonic jerking and vomiting

7. Muscular Joints in the body are too compressed to move after 300 meters. Too much pressure causes the muscular system to shut down

8. Nervous Nitrogen and Oxygen levels underwater can be toxic leading to tremors and or seizures underwater

9. Adaptations of Human Body The Buoyancy of the human body work to keep the head and body afloat to prevent drowning The body shivers to maintain homeostasis the muscles move rapidly to generate heat Enlarged eyes, Expandable Stomach absence of Jaw

10. Proper Equipment Deep sea Submarines Wet suit, oxygen tank, Scuba gear