(Greek [pelagos] > Latin [pelagicus]: sea, pertaining to the sea or ocean)
Sea depths are estimates and the number of feet versus meters is calculated at 3.28 feet per meter.
Bathypelagic refers to creatures that live in deep water below the level of light penetration, between 1,000 meters and 4,000 meters deep.
2. Etymology: from Latin pelagicus; from Greek pelagikos, from pelagos, "sea, high sea, open sea".
2. Concerning organisms that live or grow at or near the surface of the ocean, far from land: In Ruth's biology book, she read about pelagial areas in the seas and what organisms dwelled there.
3. Pertaining to the sea; marine: It is possible to find pelagian shells when on vacation near the ocean.
The pelagic zone of the ocean begins at the low tide mark and includes the entire oceanic water column. The pelagic ecosystem is largely dependent on the phytoplankton inhabiting the upper sunlit regions, where most ocean organisms live.
Biodiversity decreases sharply in the unlit zones where water pressure is high, temperatures are cold, and food sources scarce. Pelagic waters are divided, in descending order, into the epipelagic, mesopelagic, bathypelagic, abyssopelagic, and hadopelagic zones.
2. An endemic disease often attributed to eating diseased maize: Pellagra is found frequently among the peasantry of Southern Europe, especially in Lombardy.
The symptoms of pellagra are a reddening of the skin, which dries and cracks, and the epidermis that peels off in bran-like scales. The digestive organs and central nervous system can be affected. Pellagra can end in insanity.