There exist an archaic law like that, but it doesn't include all booties, only 'Royal Fish', and imho it would be a stretch to consider bananas as whales or sturgeons.

This case would be under maritime law. Iirc the cargo still belongs to the shipping company if it fell, but would be a 'finders keepers' if they threw it overboard. But I'm not a lawyer (sea lawyer?), I think this is for recoveries at sea, when it's already on shore local laws might apply instead, idk...