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The demersal zone is the part of the sea or ocean comprising the water column that is near to (and is significantly affected by) the coast or the sea floor. In contrast, the pelagic zone comprises the water that is not near the coast or the sea floor. Image File history File links Wiki_letter_w. ... For the three letter acronym, see SEA. Sea as seen from jetty in Frankston, Australia Look up maritime in Wiktionary, the free dictionary. ... Oceans (from Okeanos in Greek) are saline waters that cover almost three quarters (71%) of the surface of the Earth. ... Rugged coastline of the West Coast of New Zealand The coast is defined as the part of the land adjoining or near the ocean. ... The seabed (also sea floor, seafloor, or ocean floor) is the bottom of the ocean. ... Diagram of the layers of the pelagic zone. ...
Electrocytes are multinucleated with the nuclei located throughout the smooth and rough zones, but absent from the central laminated zone.
Stomach contents of numerous rays (T.californica) consisted primarily of anchovies, although demersal fish are a common substitute.
Unlike most rays, electric rays swim by using their well developed tails for propulsion while their pectoral fins remain immobile as their near neutral buoyancy allows them to drift motionless with minimal sinking.
They frequent the Inland Sea during the spring and migrate to the Pacific coast from late summer to midwinter.
It eats benthic invertebrates, cephalopods such as squid, and small demersal fish.
Neophocaena phocaenoides is a very aggresive hunter, and fish have been observed jumping out of the water when chased by it (Bryden and Harrison 1986).
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