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20 Cards in this Set
- Front
- Back
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5 zones in the ocean |
1. hadalpalagic 2. abyssopelagic 3. bathypelagic 4. mesopelagic 5. epipelagic |
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What is a unique geological feature found in the deepest layers of the ocean? |
Hydrothermal vents |
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What are the typical conditions of the deep sea? |
Cold, no plants, few animals |
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Where does the deep sea begin? |
Below the mesopelagic |
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Two characteristics of fish that are found in the deep sea ? How do these help the fish? |
Bioilluminescense, photophores, big mouths |
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How do lanternfish hide from predators below them? |
they rise to the epipelagic zone |
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Describe the reproduction in angler fish |
They release pheromones in front of the head to draw in males, who attach on the side of the female |
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What is a vertical migrator? |
fish that go from the mesopelagic up to the shallow waters to get food at night, and then come back down. |
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Explain the OMZ |
The oxygen minimum zone - oxygen saturation is the lowest. |
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Common characteristics for bottom dwelling deep sea animals? |
Gigantism, bioluminescence, Chemosynthesis (krill) |
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What is another name for the epipelagic region? |
photic region where light enters |
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difference between plankton and nekton |
plankton just floats and nekton moves by will |
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How are plankton classified? |
Femtoplankton (smallest), Picoplankton (medium size), Net plankton (largest...therefore caught in nets). |
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Describe two phytoplankton |
phytoplankton- make food by photosynthesis (diatoms, cyanobacteria) |
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Zooplankton |
1. zooplankton-find food (Protozoans, crustaceans)
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What do you call a plankton that spends its entire life planktonic? |
Holoplankton (amphipod, tintinnid, comb jelly) |
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What do you call a plankton that only spends part of its life platonic? |
Meroplankton (Fish larvae, nauplii, brittle star ) |
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What is a red tide and why is it significant? |
when you have a sudden algal bloom can kill fish, harm humans, etc. |
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What is DOM? |
All plankton that die and sink to the bottom |
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What is el nino? |
Every 7 years the big hurricane that starts with the waters of Peru and Chile |
