1.  Ocean deposits
Ocean Deposits - The ocean floor is almost covered with a blanket of sediments. The marine deposits are the outcome of deposition of sediments due to continuous wearing of rocks along with the other material such as the remains of marine animals and plants.

2. Classification of ocean deposits
 On the basis of depth
A) Deep sea deposits- (below 100 fathoms)
I) Pelagic deposits
Red clay
Radiolarian ooze
Diatom ooze
Globigerina ooze
Pteropod ooze
II) Terrigenous deposits
Blue mud
Red mud
Green mud
Coral mud
Volcanic mud
B) shallow sea deposits-(between low tide water and fathoms)
Gravels
Sands
Mud
C) littoral deposits- (between high and low tide water)

3. General classification
On the basis of location- Sir John Murray and j.t. Jenkins classified into the following two categories
Shelf deposits
Pelagic deposits
General classification
Terrigenous deposits
Littoral deposits
Shallow water deposits
Terrigenous mud
Neritic deposits
Shallow water neritic deposits
Deep seawater neritic deposits
Pelagic deposits.

4. Distribution of ocean deposits
Distribution of ocean deposits may be attempted in various ways as follows:
Vertical distribution of ocean deposits
Regional distribution (ocean-wise distribu­tion)
Marine province-wise distribution, such as ocean deposits on continental shelves, and on deep sea plains.
Sediment-wise distribution, such as terrigenous deposits, and pelagic deposits.

5. Sediment-wise distribution
Distribution of terrigenous deposits
Terrigenous deposits include gravels, sands, muds and volcanic materials etc. Which are derived through weathering and erosion of continental rocks by various denudational processes. The sequence of these materials from the coast towards the sea is gravel, sand, silt, clay and mud.
Terrigenous deposits are classified into 3 categories
Littoral deposits
Shallow water deposits
Deep water deposits

6. Littoral deposits- found on the continental shelves mainly near the coastal margins up to the depth of 100 fathoms (600 feet) but they have been also traced upto the depth of 1000 m-2000 m. Littoral deposits consist of gravels, sands, silt, clays and muds.
Shallow water deposits –terrigenous sediments deposited between low tide water and 100-fathom depth. These deposits consist of gravels, sands, silt and clays of varying proportions. Sea waves and tidal waves help in the gradation and sorting of sediments but undersea landslides, slumping, strong storm waves, and storms some times disturb the vertical stratification of sediments.
Deep water deposits- the sediments deposited below the depth of 100 fathoms. There is marked gradation of sediments in vertical succession where the sequence of sediments with increasing depths is blue mud, red mud, green mud, coral mud and volcanic mud.

7. Distribution of pelagic deposits
Pelagic deposits consisting of remains of marine plants and animals in the form of different types of oozes cover about 75.5 per cent of the ocean areas. Red clay constitutes 31.1 percent of the total ocean deposits.