An interesting article on the use of shellfish by Neandertals, this time 150kya in Spain. It's not too surprising, since Neandertals used shellfish there, and in other parts of the Mediterranean, in later periods, but this puts Neandertal use of shellfish almost as far back as the Pinnacle Peak finds in South Africa.
This brings up the issue of fishing and shellfishing as signs of modernity, as well as issues of diet breadth among premodern peoples. I'm not surprised to find Neandertals had the behavioral plasticity to use marine resources. I've always assumed that the use of fish, shellfish, and small game is a reflection of environmental/economic/demographic circumstances, rather than of inherent ability. Perhaps this find will strengthen that interpretation.