When Jesus heard [of it], he departed thence by ship into a desert place apart: and when the people had heard [thereof], they followed him on foot out of the cities. (14:13)

--Mark--

And they departed into a desert place by ship privately. (6:32)

--Luke--

And the apostles, when they were returned, told him all that they had done. And he took them, and went aside privately into a desert place belonging to the city called Bethsaida. (9:10)