Sharks enthusiasts have used fish guts to attract great white sharks for years, but it seems the fearsome creatures may be attracted to something more pleasing to their ears: music from Australian rock band AC/DC.

Matt Waller, a tour operator in South Australia’s Neptune Bay, has observed that when sharks hear the band’s hits, especially Shook Me All Night Long and Back in Black, they are drawn to the source of the music.

Matt’s research was inspired by dive operators on Guadalupe Island, who discovered playing music underwater for clients also caused changes in shark behavior. He and his company, Adventure Bay Charters, decided to do some experimenting of their own.

Using underwater speakers attached to diving cages, they pumped Australian rock hits through the water. Most of Matt’s tunes had no effect, but when the great whites heard the AC/DC songs, they swam up and rubbed their faces against the source of the music.

LYMAN BEACH, Kailua-Kona (HawaiiNewsNow) – A photo shows Theresa Fernandez with a big smile on her face, and a big bite in her board.

It’s a smile of relief and thankfulness after her board was attacked by a shark Wednesday as she surfed at Lyman’s Beach off Kailua-Kona.

Fernandez spent much of the day at the beach and was nearing the end of her surf session. She said she was paddling out for one of her last waves of the day.

“And there’s a big thud on the bottom of my board, and I’m thinking, ‘okay, we have encounters with turtles all the time,” Fernandez said. “And next thing I know, the thud is followed by a big yank from the back of my board, backwards and down.”

Fernandez then knew it definitely wasn’t a turtle, as the shark tried to pull the board underwater.

“Half my board and my body went under the water, and I just started to paddle as strong as I could to try and get away,” Fernandez said.

The shark then let go, and Fernandez paddled back to shore unhurt and helped to alert others to get out of the water.

Wednesday’s attack came three days after Alayna DeBina was attacked by a shark at the same beach.

“I don’t think she got to have eye to eye contact with the shark like I did,” said DeBina Wednesday, “but from what I hear, she was surfing and luckily she had her legs up in the air on the board at that point, and the shark apparently bit her board from the back and shook it up real good and then let it go, probably because the skeg poked it in its mouth.”

DeBina also escaped without injury.

A shark specialist from the Department of Land and Natural Resources said it appeared that a tiger shark was involved in both attacks, but didn’t think it was the same shark. Tests are being done to determine the size of the sharks.

Talk about a big fish—an expedition crew has hauled up—and released—what the team says is the biggest great white shark yet caught.

The 17.9-foot-long (5.5-meter-long) male behemoth was found off Mexico’s Guadalupe Island (map) in fall 2009.

The animal breaks the team’s previous record of 16.8 feet (5.1 meters), set when they caught a female great white named Kimel. (Both records are unofficial and not maintained by a formal organization.)

The new titleholder was named Apache after the dog of Brett McBride, boat captain on the National Geographic Channel show Shark Men. (The National Geographic Channel is part-owned by the National Geographic Society, which owns National Geographic News.)

Shark Men chronicles the work of scientists and fishers who catch and release great whites in an effort to figure out where the mysterious giants breed and give birth. The scientific team is led by Michael Domeier, president and executive director of the Marine Conservation Science Institute.

The two-ton Apache put up a fight—at one point breaking free from his barbless hook, said expedition leader Chris Fischer.

“The battle with Apache was like nothing we’ve ever dealt with,” Fischer said.

Once on board, the researchers fitted the fish with a satellite-tracking tag, took a blood sample, and released him, watching him vigorously swim away.

(See related pictures: “‘Shark Elevator’ Lifts Great Whites From Sea.”)

“He was all scarred up and had big marks all over him—you could tell he was just a bad-ass shark,” Fischer said.

“It was so impressive and so humbling to be near him.”