In the deep ocean, marine snow is a continuous shower..?
of marine microorganisms and plankton
of mostly organic detritus falling from the upper layers of the water 
of microbubbles containing air
of salt crystals formed as a result of sea currents
IMarine snow refers to organic particulate matter that constantly falls from the upper waters into the deeper waters of the ocean. Marine snow serves to provide food and energy from the productive upper waters exposed to sunlight to the marine organisms that reside in the deeper regions of the water column. The content and abundance of marine snow varies seasonally and with variations in ocean currents.
reach: rather globalbiologycuriositieshydrologymarine organismsoceans
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of marine microorganisms and plankton
of mostly organic detritus falling from the upper layers of the water 
of microbubbles containing air
of salt crystals formed as a result of sea currents
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