Neanderthals had throwing spears, too!!
https://www.ucl.ac.uk/news/2019/jan/neanderthal-hunting-spears-could-kill-distance
They probably used thrusting spears when they worked better to kill huge prey species.
Homo sapiens were of course not aquatic mammals! We are close relatives of Neanderthals, and our genomes contain Neanderthal sequences!!
Cut the baloney!!
For starters, regardloess of whatever kinds of spears anybody might be finnding, Neanderthals never had the kinds of shoulders you'd to throw ANYTHING overhand the way humans do. The only way a chimp or gorilla can throw anything is sidearm, the way you'd throw a frisbee; the same would have been true of the Neanderthal and other hominids. The Neanderthal was a very advanced bipedal ape with dark-world eyes and a thick fur coat.
We share half our genes with the banana. That comes from humans EATING bananas pretty much forever, both here on Earth and probably throughout the universe; IT DOES NOT COME FROM HUMANS INTERBREEDING WITH BANANAS!!!
The same is true of Neanderthals. The first experience modern humans ever had with Neanderthals was watching friends and family members being killed and eaten by them. Eating the occasional Neanderthal they killed in battle was just sending the fricking Neanderthals a message in their own language.