Indeed, the coordinates are in the water, but there does appear to be an industrial building by a dock about a quarter mile to the southeast, in Pelican Harbor. That could plausibly be a seafood processing plant.
This kind of error could very easily occur because the data source took street addresses and geocoded them based on TIGER address interpolation ranges. Compounding the issue, the dataset only specifies latitudes and longitudes to the thousandth of a degree, which is not as much precision as we typically work with in OSM.
In this case, up in Alaska, a remote mapper won’t have any street-level imagery to definitively verify the location, as I did with the pool manufacturer above. However, in general, I think we should allow mappers to verify these POIs by looking around, rather than automatically discounting them as invalid based on the raw location.