small particles of organic biogenic marine sediment, including the remains of organisms, faecal matter, and the shells of planktonic organisms, that slowly drift down to the sea floor
Examples of 'marine snow' in a sentence
marine snow
We also learn about the descent of drifts of dead plankton - so-called marine snow.
Times, Sunday Times (2010)
Marine snow falls after surface plankton blooms in spring, giving the deep ocean a seasonal rhythm of its own.