Portuguese Man O' War
Walker recalled one encounter with a dangerous jellyfish, the Portuguese Man O' War, which is as venomous as a cobra. When he was stung, he couldn't feel his spine for five minutes. He had to keep swimming to finish the event, even though he was certain he'd been paralyzed...
More Dangerous At Night
During a swim in the Catalina Channel, Walker had to make half the journey in complete darkness. While he was freezing and sick, he persevered even though he was completely surrounded by darkness. He had no choice but to keep swimming or else he'd drown...
Advertisement