'Back from shore' is made from a bunch of craps retrieved from the water body. Pollution and contamination has become a household slang, yet it seems to be in the increase! We need water most but it also appears as if it is despised. 'Back from Shore' references the urban-industrial wastes or effluents which end up in the rivers and ocean. Some industrial nations also ship and dump their toxic industrial wastes into their neighboring nations' water body.