John 6:24
“And embarking in boats from Tiberias, they came to Capernaum seeking Jesus.”
What else then could they suspect, save that He had arrived there crossing the sea on foot? For it was not possible to say that He had passed over in another ship. For “there was one,” says the Evangelist, “into which His disciples entered.” Still when they came to Him after so great a wonder, they asked Him not how He crossed over, how He arrived there, nor sought to understand so great a sign. But what say they?
Source: Homilies on the Gospel of John (New Advent)