Marine - Neritic
- supra-littoral zone
- littoral zone
- sublittoral zone
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Marine - Oceanic
- epipelagic
- mesopelagic
- epipelagic
- abyssopelagic
- hadopelagic
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Brackishwater
- estuaries/lagoons/brackish seas
- mangroves
- marshes/swamps
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Freshwater
- rivers/streams
- lakes/ponds
- caves
- exclusively in caves
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