Two fishermen battled sharks after their boat capsized off the coast of Louisiana, while a third swam for help.
Swimmer Fong Le managed to find a phone signal and sent a map of his location to Google just before his battery died, he told ABC News.
The trio were stuck at sea for 28 hours in shark-infested waters before being rescued.
Luan Nguyen said he and his friends had been in the water since about 10 a.m. Saturday predators appeared on Sunday morning. He said one bit the front of his life jacket.
“I punched him in the face. And I think that’s where I caught… these injuries on my arm. I took two thumbs and poked him in the eye and he flew away,” he said.
The third man was identified as Son Nguyen.
When the group’s 24-foot (7.3-meter) boat sank, they were left without a radio in an area without telephone service.
“We made a distress signal on the VHF radio to the coastguard and told them we had taken on water,” Mr Le told the ABC. “And not even seconds after that, the boat was almost half in the water.”
They tied two cool boxes together as a makeshift float, while one kept water and fruit, Mr Nguyen said.
Mr Le said he swam for help on Sunday and after swimming a few kilometers he found a signal on his phone and texted a friend with the location on a Google map.
“I see him trying to answer me. And the phone cut off – I’m out of battery,” Mr Le said.
The fisherman’s wife reported them missing around 10 p.m. Saturday, said Lt. Commander Kevin Keefe, New Orleans sector rescue coordinator.
The woman didn’t know the launch point, and he said it took about 3.5 hours to find their car in Venice, near the southeastern tip of Louisiana, so crews would know the best places to search at dawn.
Coast Guard boats, planes and helicopters spent wasted hours searching an area larger than Rhode Island before the Google Maps screenshot arrived.
Using the contours of the coast, the command center was able to determine where he was, Mr. Keefe said.
The Coast Guard said the two men were found about 25 miles from Empire, a small community located along the last narrow strip of the Mississippi Delta, southeast of New Orleans.
Mr. Le was rescued first.
Even as the other two men were pulled from the water and lifted into a helicopter, they were surrounded and harassed by four blacktip sharks, about 4 to 6 feet (1.2 to 1.8 m) long, said Andrew Stone, who was in a Coast Guard boat. crew that rescued the exhausted couple.
“They were too tired to even panic,” he said.
All three fishermen went home on Tuesday, the Coast Guard said.