The mesopelagic (Greek μέσον, middle) (also known as the middle pelagic or twilight zone) is a pelagic zone extending from 200 m (650 ft.) down to around 1000 m (3280 ...

Any water in the sea that is not close to the bottom or near to the shore is in the pelagic zone. The word pelagic comes from the Greek πέλαγος ...

Krill is a shrimp-like marine invertebrate animal. These small crustaceans are important organisms of the zooplankton, particularly as food for baleen whales, manta rays, whale shark ...

An ocean (from Greek Ὠκεανὸς, "okeanos" OceanusὨκεανός, Henry George Liddell, Robert Scott, A Greek-English Lexicon, at Perseus project) is a major body of saline water, and a principal component ...