Considering Ptolemy's "Ouenedai" and their location along the Baltic sea, the German linguist, Alexander M. Schenker, asserts that the vocabulary of the Slavic languages shows no evidence that the early Slavs were exposed to the sea. Schenker claims that Proto-Slavic had no maritime terminology and further claims it even lacked a word for amber. Based on this belief, and the fact that Ptolemy refers to the Baltic Sea as the "Venedic" Bay, Schenker decides against a possible identification of the "Veneti" of Ptolemy's times, with today's Slavs. According to Gołąb, Schenker's conclusion is supported by the fact that to the east of the "Venedae", Ptolemy mentions two further tribes called "Stavanoi" (Σταυανοί) and "Souobenoi" (Σουοβενοι), both of which have been interpreted as possibly the oldest historical attestations of at least some Slavs.