AceShowbiz - Leonardo DiCaprio has helped save a life. When vacationing near the island of St. Barts, the "Once Upon a Time in Hollywood" star and some friends learned that a man had drunkenly fallen overboard a Club Med yacht, and decided to join the search efforts.

The leading man of "The Revenant" was on a rented boat with girlfriend Camila Morrone and some friends on December 30, when they heard the Mayday call. A source told The Sun that the 45-year-old actor's group was "the only responders" to the "panicked emergency message" sent out by the captain of the Club Med cruise ship.

The drunken man himself was identified as Victor, a 24-year-old Frenchman working on the cruise ship. He reportedly had "fallen overboard after too much alcohol and a long night," and was "minutes from drowning when he was found" after 11 hours in the water. A source added, "He had been treading water and still managed to flail his hands as Leonardo came near."

Victor was said to have been spotted near Saba island and rescued about an hour before the sun set with "a giant rainstorm closing in." His chances of survival was put "at one in a billion - like winning the lottery twice." As for his reaction over Leo's rescue, the source spilled, "He thought he was dreaming after being rescued by one of the world's most famous faces."

DiCaprio was not the only celebrity making headlines early in the new year for serving as good Samaritan. On January 6, Shaquille O'Neal was caught on camera helping a woman who fainted in the middle of a crosswalk in New York City. The four-time NBA champion helped stop the traffic and stayed by the woman until the EMTs arrived. He only left after shaking hands with medical personnel and made sure the woman was in the right hands.