Looking dazed and sunburned, U.S. endurance swimmer Diana Nyad walked ashore Monday, becoming the first person to swim from Cuba to Florida without the help of a shark cage. The 64-year-old Nyad swam up to the beach just before 2 p.m. As she approached, spectators waded into waist-high water and surrounded her, taking pictures and cheering her on. I have three messages. One is, we should never, ever give up. Two is, you're never too old to chase your dream. Three is, it looks like a solitary sport, but it is a team," she said on the beach. "I have to say, I'm a little bit out of it right now," Nyad said. She gestured toward her swollen lips, and simply said "seawater." Her team said she had been slurring her words while out in the water. She was placed on a stretcher on the beach and received an IV before she was taken by ambulance to a hospital. But her doctor later declared her essentially healthy and expected her to recover quickly from dehydration, swelling and sunburn. "I just wanted to get out of the sun," she said after coming ashore on a scorching, sunny day amid calm seas. It was Nyad's fifth attempt and what she had said would be her last try to complete the approximately 110-mile swim. She tried three times in 2011 and 2012. Her first attempt was in 1978. "It's historic, marvelous," said Jose Miguel Diaz Escrich, the Hemingway Marina commodore who helped organize the Cuba side of Nyad's multiple attempts. "I always thought she could do it given her internal energy, her mental and physical strength, her will of iron," said Diaz Escrich, whom Nyad has called a longtime friend. "More than the athletic feat, she wants to send a message of peace, love, friendship and happiness ... between the people of the United States and Cuba," he added. President Barack Obama was among a flurry of public officials and celebrities who tweeted congratulations. The president's tweet read: "Never give up on your dreams." Others who tweeted included Ryan Seacrest, who wrote "We should never ever give up ... you never are too old to chase your dreams." Nyad's previous try was cut short amid boat trouble, storms, unfavorable currents and jellyfish stings that left her face puffy and swollen. This time, she wore a full bodysuit, gloves, booties and a mask at night, when jellyfish rise to the surface. The new silicone mask caused bruises inside her mouth, making it difficult for her to speak, she told her team as she neared land. Doctors traveling with Nyad had been worried about her slurred speech and her breathing, but didn't intervene, according to Nyad's website. "She was incredible to watch the whole way through," said one of her doctors, Derek Covington, speaking with The Associated Press afterward. Covington said Nyad was given IV fluids on her arrival to combat dehydration and was resting and being checked out at a medical center as a precaution. Although she had some swelling of the lips, tongue and the airway near the mouth, Nyad wouldn't need a long recovery, the doctor said, calling her stable and "very healthy." Meanwhile, her website declared her team was in a mood to celebrate, with the words "Party Time." Nyad jumped from the seawall of the Hemingway Marina into the warm waters off Havana Saturday morning to begin swimming. She paused occasionally for nourishment, but never left the water.