What does Mark 8:10 mean?

Dalmanutha is only mentioned here in the Bible, and scholars debate over its historical location. If Jesus and the disciples are in Decapolis (Mark 7:31) and will soon travel "to the other side" (Mark 8:13) to Bethsaida (Mark 8:22), it stands to reason "Dalmanutha" is on the western shore of the Sea of Galilee. Some believe Dalmanutha is either near or another name for Magadan (Matthew 15:39). Magadan is thought to be another name for Magdala as "l" and "n" are sometimes interchanged when translating between Hebrew and Aramaic. Magdala is the hometown of Mary of Magdalene, and sits about six miles south of Capernaum.

Another of the great mysteries of the Gospel of Mark is: Where did the boat come from? Jesus and the disciples had traveled from Capernaum northwest to the region of Tyre (Mark 7:24), farther north to Sidon, and then to the southeast shore of the Sea of Galilee (Mark 7:31) with no mention of stopping by Capernaum to grab Peter and Andrew's boat. The question, for the moment, is unanswered. In the same way, we don't know why Jesus interrupts His journey through quiet Gentile lands with a stop in Galilee where the Pharisees are waiting to harass Him once again (Mark 8:11–13).

About sixty years after the events and about forty-five years after the book of Mark was written, John states that Jesus did much more than his Gospel records, but what is written is what is needed to believe "Jesus is the Christ, the Son of God, and that by believing you may have life in his name" (John 20:30–31). We can be assured that this holds for the other three Gospels as well; what the Bible does not reveal is not a salvation issue.