Final answer:
Yes, Neanderthals did utilize marine resources like shellfish and fish in their diet and activities.
Step-by-step explanation:
Yes, Neanderthals did utilize marine resources like shellfish and fish in their diet and activities. Their diets varied depending on the environments they lived in. In frigid and icier environments, Neanderthals relied more on animals and fish for sustenance. They likely used spears, nets, and even bone hooks for fishing.