ocean
largest body of saltwater covering 75% of globe
sea
body of saltwater of second rank, more or less land-locked
inlet
long, narrow indentation in the shoreline
gulf
part of an ocean or sea extending into land
cove
indentation in the shoreline, deeper than wide
bight
indentation in the shoreline, wider than deep
bay
smaller than a gulf, bigger than a cove, partly enclosed by land
continental margin
consists of slope, shelf, and rise
continental shelf
region of continental margin from land to slope
continental slope
region of continental margin from shelf to deep sea
continental rise
accumulation of sediment at the bottom of the slope
strait
narrow passage of water connecting two larger bodies of water
channel
strait or narrow sea between two close land masses
sound
passage of water between an island and the mainland
rift zone
where two plates move apart, mountain chains from on both sides
trench
deep valley - caused when one plate subducts under another
submarine canyon
underwater, v-shaped canyon found in the continental margin
sea mount
submerged volcano (1000-4000 m)
guyot
flat topped sea mount
abyssal plains
wide rolling plains covering 60% of sea floor