marine snow
n.— «The discarded mucus houses are one of the components of what scientists call “marine snow,” remains of dead organisms that sink down to the seabed. Marine snow is an important part of the marine vertical carbon flux.» —“What is on the menu for zooplankton?” by Lars Holger Ursin På Høyden (Bergen, Norway) Jan. 19, 2007. (source: Double-Tongued Dictionary)
Further reading
A newscaster covering treacherous driving conditions offered this advice: Keep it between the mustard and the mayo. In other words, “Make sure your car stays between the yellow line and the white line on the road.” This is part of a complete episode...
Diamond dust, tapioca snow, and sugar icebergs — a 1955 glossary of arctic and subarctic terms describes the environment in ways that sound poetic. And a mom says her son is dating someone who’s non-binary. She supports their relationship, but still...