Slide 1
... Oceans vary in light, pressure, temperature and nutrients. lack of sediments in the water is a key factor for marine species= light ...
... Oceans vary in light, pressure, temperature and nutrients. lack of sediments in the water is a key factor for marine species= light ...
new antarctic fish species discovered
... New Antarctic Fish Species Discovered LiveScience.com March 6, 2009 A Spanish researcher has discovered a newfound species of fish in an area of the Antarctic Ocean that has not been studied since 1904. The fish, given the name Gosztonyia antarctica, was found at a depth of 2,000 feet (615 meters) i ...
... New Antarctic Fish Species Discovered LiveScience.com March 6, 2009 A Spanish researcher has discovered a newfound species of fish in an area of the Antarctic Ocean that has not been studied since 1904. The fish, given the name Gosztonyia antarctica, was found at a depth of 2,000 feet (615 meters) i ...
Chapter 15 - Life Near the Surface
... their ______________________________. This also helps to keep them from _____________________. ...
... their ______________________________. This also helps to keep them from _____________________. ...
Answer Key
... Kelp forest: large community of seaweed that grows to great heights; worms, starfish, lobsters, crabs, abalones, octupuses 3. surface zone: top 200 meters, sunlight reaches through, nutrients sink to the bottom, organisms must blend in and swim fast, life is spread out; deep zone: below 200 meters t ...
... Kelp forest: large community of seaweed that grows to great heights; worms, starfish, lobsters, crabs, abalones, octupuses 3. surface zone: top 200 meters, sunlight reaches through, nutrients sink to the bottom, organisms must blend in and swim fast, life is spread out; deep zone: below 200 meters t ...
Deep sea fish
Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep sea fish include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, and viperfish.Only about 2% of known marine species inhabit the pelagic environment. This means that they live in the water column as opposed to the benthic organisms that live in or on the sea floor. Deep-sea organisms generally inhabit bathypelagic (1000m-4000m deep) and abyssopelagic (4000m-6000m deep) zones. However, characteristics of deep-sea organisms, such as bioluminescence can be seen in the mesopelagic (200m-1000m deep) zone as well. The mesopelagic zone is the disphotic zone, meaning light there is minimal but still measurable. The oxygen minimum layer exists somewhere between a depth of 700m and 1000m deep depending on the place in the ocean. This area is also where nutrients are most abundant. The bathypelagic and abyssopelagic zones are aphotic, meaning that no light penetrates this area of the ocean. These zones make up about 75% of the inhabitable ocean space.The epipelagic zone (0m-200m) is the area where light penetrates the water and photosynthesis occurs. This is also known as the photic zone. Because this typically extends only a few hundred meters below the water, the deep sea, about 90% of the ocean volume, is in darkness. The deep sea is also an extremely hostile environment, with temperatures that rarely exceed 3 °C and fall as low as -1.8 °C (with the exception of hydrothermal vent ecosystems that can exceed 350 °C), low oxygen levels, and pressures between 20 and 1,000 atmospheres (between 2 and 100 megapascals).