Life in the Open Ocean. Joseph J. Torres
profoundly with increasing depth of occurrence. A fish living at the surface has a metabolism about 50 times that of a species living at 1000 m. Weaker swimmers where vision plays less of a role, such as jellyfishes and chaetognaths, do not show an equivalent decline in metabolic rate with depth of occurrence. Benthic and benthopelagic fishes show a similar decline with depth of occurrence, but benthic crustaceans do not.
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