| Multicuspidate radular teeth are most prominent in nude incirrate octopods of the bathypelagic Bolitaenidae. |
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| The upper reaches of the deep ocean contain many bathypelagic fishes with a capacious, gas-filled swimbladder. |
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| Several bathypelagic fish species, whose occurrence has hitherto not been recorded in the Adriatic, were found among the catches. |
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| The eggs are bathypelagic, which means that they are free floating, but at depth. |
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| Description: widely distributed in North Pacific rare, off shelf, bathypelagic, 5.9-6.4mm. |
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| Description: Cosmopolitan, bathypelagic, off shelf, never overly abundant, max 150mm. |
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| This was the first survey of life in the mesopelagic and bathypelagic zones of Canadian waters in twenty years. |
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| Below about 1,000 meters lies the bathypelagic zone, accounting for 88 percent of the total ocean area and covering the entire deep ocean floor. |
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| Stomach analysis has also shown that the diet consists mostly of pelagic or bathypelagic organisms. |
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| Even some species of bathypelagic habitat are limited to one ocean. |
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| Because food is so scarce, bathypelagic predators are not selective in their feeding habits, but grab whatever come close enough. |
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| Despite their ferocious appearance, bathypelagic fish are usually weakly muscled and too small to represent any threat to humans. |
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| The Sloane's viperfish can make nightly migrations from bathypelagic depths to near surface waters. |
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| In deep waters, the fishes of the demersal zone are active and relatively abundant, compared to fishes of the bathypelagic zone. |
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| The vampire squid, the most common mollusk in the bathypelagic zone, is over 200 million years old. |
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| It was stressed that greater effort, in both technological and financial terms, was required in order to document information on biodiversity and the environmental conditions of the bathypelagic zone, trenches and seamounts. |
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| Zones which vary according to their depth include the epipelagic, mesopelagic, bathypelagic, abyssopelagic, and hadopelagic zones. |
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| This is the midnight or bathypelagic zone, extending from 1000 m to the bottom deep water benthic zone. |
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| The behaviour of bathypelagic fish can be contrasted with the behaviour of mesopelagic fish. |
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| The swimbladders of deep sea fish are either absent or scarcely operational, and bathypelagic fish do not normally undertake vertical migrations. |
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| What little energy is available in the bathypelagic zone filters from above in the form of detritus, faecal material, and the occasional invertebrate or mesopelagic fish. |
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| These are the same features found in fish larvae, which suggests that during their evolution, bathypelagic fish have acquired these features through neoteny. |
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| Bathypelagic Zone 1,000 to 4,000 m No light penetrates to the midnight zone. |
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| Bathypelagic fish are black, or sometimes red, with few photophores. |
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| Bathypelagic fish are sedentary, adapted to outputting minimum energy in a habitat with very little food or available energy, not even sunlight, only bioluminescence. |
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