Owing to the present state of continental drift, the Northern Hemisphere is now fairly equally divided between land and sea (a ratio of about 2:3) but the South is overwhelmingly oceanic (1:4.7).Salinity in the open ocean is generally in a narrow band around 3.5% by mass, although this can vary in more landlocked waters, near the mouths of large rivers, or at great depths. About 85% of the solids in the open sea are sodium chloride. Deep-sea currents are produced by differences in salinity and temperature. Surface currents are formed by the friction of waves produced by the wind and by tides, the changes in local sea level produced by the gravity of the Moon and Sun. The direction of all of these is governed by surface and submarine land masses and by the rotation of the Earth (the Coriolis effect).
The Sea or the Water is an area of the sky in which many water-related, and few land-related, constellations occur. This may be because the Sun passed through this part of the sky during the rainy season.
Most of these constellations are named by Ptolemy:
Sometimes included are the ship Argo and Crater the Water Cup.
Some water-themed constellations are newer, so are not in this region. They include Hydrus, the lesser water snake; Volans, the flying fish; and Dorado, the swordfish.
See also
Celestial ocean, a mythological concept, not specific to astronomy
Sea EP is the second EP from Doves. It was self-released on the band's Casino Records label on 24 May 1999 on limited CD and 10" vinyl. The band dedicated the EP to Rob Gretton, who helped fund Doves' early releases as well as when the band played as Sub Sub. Rob died of a heart attack only a few days before the EP was released. In the music video for "Sea Song," the opening title card reads "For Rob."
Life at Sea’s rendering of the MV Lara. Life At Sea Cruises ... On May 31, Holmes announced that Life at Sea was not going to set up an escrow account to process payments ... Life at Sea’s website is advertising another launch date for November 2024.