bathyal zone meaning in Hindi

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The Dana Viperfish is mostly found in the Bathyal zone.
The zone above is the bathyal zone.
The bathyal zone extends from to.
The aphotic zone is further divided into additional zones : the bathyal zone, the abyssal zone, and the hadal zone.
It occurs on the outer continental shelf and in the upper bathyal zone . " R . mollicella " lives at depths from 729 to 805 m.
It ranges from southern Norway to the western Mediterranean Sea . " S . aurantiaca " occurs on the outer continental shelf and in the upper bathyal zone.
""'Thaumeledone gunteri " "'is a species of small, benthic, deep-sea octopus found in the bathyal zone in the Southern Ocean near South Georgia.
The results were published in 1956 as " The Archibenthal Mollusca of New Zealand ", which was a major contribution to the knowledge of molluscan fauna in the bathyal zone of New Zealand waters.
Although the temperature varies less at any one height than the epipelagic, the mesopelagic is the location of the thermocline; and in warmer regions of the world, the temperature varies from over 20 �C ( 68 �F ) at the top to around 4 �C ( 39 �F ) at the boundary with the bathyal zone.

noun.

the steep descent of the seabed from the continental shelf to the abyssal zone
synonyms：,