A pipe from the St. Lucie Nuclear Power Plant in Florida pulls in about 500,000 gallons of water from the ocean per minute, but on July 12 it pulled in more than just water, sending scuba diver Christopher Le Cun on an unexpected five-minute ride.

"When I was first sucked into the pipe, it was so turbulent it was unbelievable," Le Cun told CNN. "I had to hang onto my mask. It was 20-30 seconds before I got my bearings."

Le Cun was diving near the plant in Florida when he was sucked into the pipe measuring 16 feet in diameter and a quarter-mile in length.

"It spit me out into the sunlight into this canal and there were tons of fish around," says Le Cun. "Goliath groupers, tarpons, a bunch of fish that didn't make it."

He ended up in a pond at the plant, where a worker found him minutes before closing up for the night.

Le Cun filed a lawsuit against Florida Power & Light Co., saying that the pipe was unmarked. A spokesperson for FPL told CNN that there is a protective cap over the pipe and an 8-foot buoy at the surface warning people to stay 100 feet away.

Le Cun says that the cap "is not designed to keep anybody or anything out." Another diver was also pulled into the piping in 1989.

"I am 100 percent positive that there were no signs on the buoy," Le Cun told Florida news station WPTV. "I know that because my boat was tied to that buoy."

For tips on how to avoid dive accidents and stay safe in the water, check out our Learn From This column.