/ Amazon Swim via AP

Martin Strel emerges from the Brazilian section of the Amazon river. Strel completed his 3,272 mile swim of the Amazon on Saturday, a 65-day odyssey in which he battled exhaustion and delirium while trying to avoid flesh-eating piranhas and the dreaded bloodsucking toothpick fish.

In addition, his eyes became sore and swollen, probably from sunblock getting inside his goggles.

The sunburn became so bad that while still swimming in Peru he thought of quitting, he said.

"I couldn't sleep at night and I thought we would have to stop for a week or so. But with time things improved," he said. "People from all over the world sent us some creams that helped solve the problem and we improved the mask."

If confirmed by Guinness World Records, the Amazon swim will be the fourth time Strel has broken the world record for long-distance swimming.

In 2000, he completed an 1,866-mile swim along the Danube. He broke that record two years later after swimming 2,360 miles down the Mississippi. In 2004 he broke it again by swimming 2,487 miles along the Yangtze river in China.

Strel's Web site said he broke his 2004 record on March 17 when he arrived in the small town of Urucurituba in the state of Amazonas, 2,490 miles from the river's source.

Kate White, a Guinness spokeswoman, said the organization would only confirm if Strel had established a new record after analyzing data from him and his support team, a process that usually takes six to eight weeks.

Strel's staff said they planned to send Guinness all the documents required by the first week in August, at the latest.

Comparing his Amazon adventure with his other record-breaking swim in Europe, the United States and China, Strel said "it was the toughest expedition by far."

"The Amazon river has no barriers like locks, so the current is constantly flowing," he said. "I didn't expect so many whirlpools and so many currents."

Asked about new adventures, he said: "I am not thinking about that right now ... But I'll find some other crazy swim, maybe in a lake or in an ocean."

"I am not going to do the Nile. It's long but not challenging enough, it is just a small creek, he said. "The Amazon is much more mighty."

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