Yeah, and all of those cultures were just waiting for the domestication of the dog before they could hunt shellfish and seafood. Until then, they had to subsist on seaweed and dune grass.
How about a word from the scientists?
From
National Geographic
"About 12,000 years ago hunter-gatherers in what is now Israel placed a body in a grave with its hand cradling a pup. Whether it was a dog or a wolf can’t be known. Either way, the burial is among the earliest fossil evidence of the dog’s domestication. Scientists know the process was under way by about 14,000 years ago but do not agree on why."
And yet, there's evidence we hunted or scavenged meat a long time before that.
"One investigator, Raymond Dart, who named the original Australopithecus africanus specimen, saw the fragments as broken in such a way as to suggest that not only were these early human creatures hunting lots of other animals, but they were hunting their own species as well. The many skulls had the bases broken away, often seen as a sign of cannibalism because this is how you process animal skulls from which you want to eat the brains (yummy, and very nutritious too!). Another investigator, Robert Brain, interpreted them as evidence that something else broke the bones, site formation processes acting upon them after they were deposited as remains of meals of other carnivores such as big cats." 3.9 and 3.0 million years ago
and
"Where is Koobi Fora and what is the evidence there? In Kenya, eastern Africa, where hominid remains, animal bones, and tools and stone fragments are arranged in enough proximity to suggest living floors where groups of early humans gathered. " 2.4 - 1.3 million years ago
and
"What is important at the site of Zhoukoudian? Another classic site with a romantic story, these caves near Beijing also produced many Homo erectus skeletons early in the 20th century. The bones are now lost, though we have casts, but also there was some good archaeology. Animal remains and fires suggest hunting and cooking of some 96 mammal species, including extinct deer, elephant, and bear, though Lewis Binford and others are now questioning the site formation processes and asking if these can also be the remains of scavenging killed meat." 1.8 million and 300,000 years ago
and
"What was found at the East African sites of Kalambo Falls and Olorgesailie? The former produced Lower Paleolithic plant remains, such as nuts and seeds, and the latter had preserved bones of baboons presumably hunted by Homo erectus. " 1.8 million and 300,000 years ago
There's more here.
What about the late Paleolithic and Mesolithic?
"What evidence is known from the Klasies River Mouth caves? These South African coastal caves have a record dating from 120,000 to 60,000 years old, with flake tools from the Middle Stone Age (Africa uses this terminology instead of Paleolithic) and fancier blade and other tools from the Late Stone Age (equivalent of Upper Paleolithic; see pictures p. 104), as well as remains of terrestrial mammals and marine foods. There is disputed evidence for cannibalism and for use of plant foods around hearths. Modern-looking human skeletal remains appear very early here, about 100,000 years ago."
and
" What other evidence tells us about Upper Paleolithic lifestyles? Clearly people were hunting, butchering, and cooking food. The Pincevent site has many living floors with hearths, an area where the flintknapper apparently worked"
and
"During this time [the Mesolithic, between the Paleolithic and Neolithic] it appears that hunter-gatherer peoples expanded the diversity of species that they used and exploited smaller regions more intensively. There are more plant remains in general, but that may just be from better preservation, not necessarily an indication that Paleolithic meat-eaters were now getting a different diet with more fruits and vegetables! "
More here.
A great timeline of early and modern hominids
Plane Crazy