| 1. | These vertical migrations often occur over large vertical distances.
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| 2. | Biological factors include breeding, predation, concentration of phytoplankton, and vertical migration.
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| 3. | Vertical migration is exhibited in submarine channels systems in the form of channel stacking.
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| 4. | Vertical migration of magma is driven by gravity.
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| 5. | Young whalefish make nightly vertical migrations into the lower mesopelagic zone to feed on copepods.
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| 6. | Sabertooth fish are solitary animals; it is not known whether they undergo diel vertical migrations.
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| 7. | Lastly, Alaskan pollock exhibit diel vertical migration, following the seasonal movement of their food.
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| 8. | It can be seen to rise and fall each day in keeping with diel vertical migration.
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| 9. | Most mesopelagic organisms, including mesopelagic fish, squid and siphonophores, make daily vertical migrations.
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| 10. | It is very abundant in the tropical IndoPacific where it makes large vertical migrations each day.
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