How Edward Norton Saved Leonardo DiCaprio's Life

Edward Norton got into environmental science at a young age. "All of the roots of my engagement with the challenge of environmental conservation lie in my upbringing and the inspiration of my father's passion for that work," he told Variety. He then praised his father's work as a conservation "strategist" and "activist," adding that it soon became a family business of some sort.

Leonardo DiCaprio also got into conservation at a young age, but his interests developed from his own childhood fascinations. "As a young boy I was obsessed with endangered species and the extinct species that men killed off," the "Titanic" actor told Parade. He then admitted that he had dreams of being a marine biologist. "When I became successful as an actor, I said, 'Well, maybe I can lend a voice to this with an equal passion,'" he added.

The two actors have never appeared in a small-screen or big-screen project together, but they are close buddies. "Leo's a very, very old friend of mine," Norton said on the "The Tonight Show Starring Jimmy Fallon." "Our friendship is totally based on our mutual passion for environmental advocacy and climate change. He's a great actor, but we've never worked together." The two have been on many adventures and travels together, and their bond strengthened when Norton saved DiCaprio from drowning.

Edward Norton told Jimmy Fallon on the "The Tonight Show" the nickname that he and his adventuring friends have for Leonardo DiCaprio. "We call him 'Unlucky Leo,'" Norton said. The comedian had a stunned reaction and said, "That's the one thing I would never call him." The "Glass Onion" actor went on to explain how "The Great Gatsby" actor has had bad luck when it comes to extreme sports. Norton mentioned that DiCaprio's parachute almost didn't open while skydiving and his plane engine blew up while flying.

DiCaprio showed just how unlucky he can get when he nearly drowned in the Galapagos Islands. Norton explained the situation on "The Jonathan Ross Show," mentioning that the "The Revenant" actor loves animals. "This flight of like 100 spotted eagle rays went by below us and I saw the look on his face," he said, adding that he then watched his friend dive into the water with a camera. "I followed him because I thought to myself, 'He's chasing these things ... he's going to run out of air,' and he did."

Director Fisher Stevens explained the situation a little more. "I see Leo buddy breathing, because Leo's tank was leaking oxygen, and Edward had to save him," Stevens told GQ. He added that they did end up recording some usable clips despite DiCaprio running out of air. "We really bonded on that trip," the director said. And it seems that the "Romeo + Juliet" actor learned from Norton.

Celebrities are no strangers to being good Samaritans. Leonardo DiCaprio himself helped save a man who drunkenly fell out of a yacht. "Leo and his friends and their boat captain decided to join the search and their efforts resulted in helping save a man's life," a source told People, adding that the man was lost at sea for 11 hours.

A young John Krasinski also saved a girl's life in Costa Rica. He told Playboy that he went underwater for a second, and when he came up, the girl had been caught in the riptide. "I just went out and tried to save her," he said, mentioning that he was immediately caught in a crosscurrent. He said the girl told him to let her go. "But I got her back."

Colin Jost recalled a time when he was saved by Jimmy Buffett in his memoir, "A Very Punchable Face." The "Margaritaville" singer invited him to go surfing in St. Barts after they had dinner together at an event. While he was surfing his first wave, he got caught on the rocks, anchoring him underwater while the waves crashed over his head. "Jimmy Buffett came in, cut my leash, got me out of the rocks, saved my life, and then kind of politely told me, 'You might want to go to a gentler surf break,'" the comedian told Robert Downey Jr.