globigerina ooze

noun

a fine, deep-sea sediment covering approximately one-third of the ocean floors at depths usually between 2,000 and 4,000 m (c. 6,560 and 13,120 ft), consisting predominantly of the empty, calcareous shells of a genus (Globigerina) of planktonic foraminifera

Etymology: ModL Globigerina, a genus of foraminifera (< L globus, a ball, globe + ger(ere), to bear + ModL -ina, taxonomic suffix < L, pl. of -inus, -ine) + ooze