This whale pump, as it's called, actually brings essential limiting  nutrients from the depths to the surface waters where they  stimulate the growth of phytoplankton, which forms the base of all marine food chains.
Ovi kitovi oblaci, tako se zovu, zapravo donose esencijalne ograničene hranjive tvari iz dubine na površinu vode gdje potiču rast fitoplanktona, koji je temelj morskog prehrambenog lanca.