The image is definitely a moose, not an elk. Is this just a mistake in the article or is "elk" a more general term in Europe?
In America...
The elk is a really big deer... https://en.wikipedia.org/wiki/Elk
Moose is a giant deer (bigger than elk) with a bulbous nose... https://en.wikipedia.org/wiki/Moose
If Europe refers to moose as elk, what do they call elk?
"European explorers in North America...thought that the larger North American animal resembled a moose, and consequently gave it the name elk, which is the common European name for moose"
I believe the answer is they don't have an American Elk equivalent.
The line between a species and subspecies is blurry. I know for a fact that when I was a child, red deer and elk/wapiti were considered the same species, just like the Neanderthal were considered a subspecies of homo sapiens. I guess the splitters are ascendant in recent times.