Kubota B8200, then a Kubota L3130 HST, now a Kubota L3400 HST
There's a disappearing island in the Chesapeake Bay, and a guy who owned a house on it tried, unsuccessfully, to move enough sand to prevent the rising waters from taking the house. This skid steer was left, and it soon too will become a navigation hazard.
Kubota M7-171, Kubota M110GX, IH 4386, IH1486, Case 301.8, Kubota L6060, plus many others
Salt water work makes it not worth the scrap iron. I've seen wheel loaders that have fallen off barges while unloading and after one day in the ocean, there is a huge cost to rehabilitate. The winter storms will reduce this to something a person will someday find due to its magnetic signature when sailing over it.