One of the most significant impacts of the spill was its effect on marine water fowl. A survey conducted between September 14 and 15, 1974 found 408 cormorants, 66
Magellanic penguins, 23 ducks, and 84 seagulls dead because of heavy oiling between Punta Piedra and Punta
Anegada. By February 1975 it is estimated that 3000 to 4000 birds may have been killed. Another estimate placed bird mortalities at 40,000. Concern was also raised regarding the fate of tens of thousands of penguins who nest on three islands in the area. Furthermore, additional ecological damage was heavily noted in the
littoral zone, where rich populations of mussels as well as populations of
limpets and
starfish were found to be heavily oil coated. The value of these organisms as food for other species was highly evident by the number of shell middens prevalent behind many of the local habitations. Thus, the spill had a negative impact to several food chains of that region. Moreover, two years after the spill, the geographic area still appeared devastated and there were no signs of any regrowth of vegetation. ==Economic impact==