The stories of Christianity and Islam about the miracles wrought by Jesus and Muhammad, mostly describe events that took place in front of a small group of people, and also those that were performed in front of a large crowd; the same crowd is unidentified and has no direct connection to contemporary Christians or Muslims.
There are no known Christians today who have a tradition passed down from a father, according to which their forefathers were present while Jesus walked on the water or distributed bread and fish.
These events also did not last long and did not have as widespread an impact as the events described in the Bible, but included only a brief local “miracle.”
It is worth noting that these two religions accept the Jewish tradition of the Exodus from Egypt and the status of Mount Sinai. But they claim that their prophet came later and brought with him an updated version of GOD's word. Had they been able to convince their believers that Jesus or Muhammad had effected a mass revelation that did not fall short of that of Mount Sinai, they surely would have done so. The fact that these religions did not try to tell such stories suggests that it was clear to them that no one would believe it.