What analogy is used to convey that the feeding ground is more important than the ocean name on the map?

Answer

Viewing the ocean like a large, shared pantry where a fish eating from a contaminated corner will carry those pollutants.

An analogy is provided to simplify the complex issue of pollutants and nutritional intake across vast water bodies. The ocean is likened to a large, shared pantry. If a fish consumes its necessary prey from a specific area within that pantry that happens to be contaminated, it will carry those contaminants, regardless of whether that contaminated section is geographically located in the Gulf of Alaska (Pacific) or the Norwegian Sea (Atlantic). Conversely, a fish that feeds only on clean, natural prey in either region will likely be healthier, emphasizing the quality of the local diet over the generalized map location.

What analogy is used to convey that the feeding ground is more important than the ocean name on the map?
healthfishPacificAtlantic