in order for the phosphorus to leave the oceanic environmental .
Much of this phosphate then concentrates in marine sediment. Some of the phosphate is eventually incorporated into the bodies of marine animals such as fish.
Phosphorus from fertilizer can runoff into waterways, where it can be carried to the ocean. This excess phosphorus can contribute to algal blooms in the ocean, which can deplete oxygen levels and harm marine life. Proper management practices can help reduce this movement of phosphorus from crops to the ocean.
its deposited somewhere else
Water also reaches the ocean as runoff from the surface. Runoff includes flow from rivers as well as melting snowfields and glaciers.
Rain causes runoff. When it rains, the rainwater mixes with trash and other pollutants and it is carried down our storm drains and into our oceans. Gasoline and sewage spills from boats and ships also contribute to the pollution problems. Also if people do not clean up there trash and just leave it into our community then when it rains, the rain picks up all the trash and then goes into sewer drains, and the sewer drains lead to the ocean.
The ocean
I believe when this happens there is phosphorus in the water, I'm not sure how it gets there though.
Collecting salt from runoff water
The final destination for runoff that flows on the surface of continents is typically the ocean. Runoff collects in rivers, streams, and other water bodies, eventually making its way to the ocean where it contributes to the global water cycle.
the ocean becomes saltier (evaporation) or less salty (precipitation/runoff)
the snow falls off the mountain and falls onto the ocean