"Plateau de mer" is not seafood platter. Seafood platter is "plateau de fruits de mer".
"Plateau de mer" could be "seabed plateau" but I am not an oceanographer so I fo not know what words they use (but strictly from the perspective of French language it is plausible)
"Plateau de mer" could be "seabed plateau" but I am not an oceanographer so I fo not know what words they use (but strictly from the perspective of French language it is plausible)