- This shark attack in the east. A 10-year-old boy losing part of his leg off the Florida Keys. ABC's Victor Oquendo from Florida. VICTOR OQUENDO: Tonight, a 10-year-old boy is lucky to be alive after a shark attack. - Shallow water, about 10 feet of water. Just a boy just out having a fun time with his snorkel and GoPro, and trying to see fish and turtles. VICTOR OQUENDO: Jameson Reeder Jr's uncle posting these photos to Facebook and telling our affiliate, WPLG, the 10-year-old was snorkeling off a boat in the Florida Keys on Saturday, when an eight foot bull shark attacked him. Jameson rescued by another boat that happened to have a nurse on board. MAN: We can see the bone. It's a pretty big bite. We've already put a tourniquet around his leg and we're wrapping towels around it. VICTOR OQUENDO: Little Jameson's leg amputated below the knee. It's the fourth shark attack in the Keys since April. As our oceans warm, sharks are coming closer and closer to shore. These spotted off Fort Lauderdale this weekend. But experts say attacks are still rare. - If you look at how many people are in the water and how many sharks we have in some of these waters, the chance of actually getting bitten is extremely low. - And Jameson's uncle telling us that he is actually back in surgery tonight, but that he's been in good spirits and that he is going to survive. David, he called him a warrior. DAVID MUIR: Well, he certainly is. Victor Oquendo in Florida tonight. Victor, thank you.