In the incident below the Shark bit the outboard motor of the boat. This is typical behaviour of GW noise vibration electrical fields, causes stimulation in the GW senses causing the animal to mouth and better understand what it has found. This is very common in young and juvenile GW, Adults seem to more wary of boats as they get older.

By Edith Bevin and Michael Diggins
November 29, 2004

A 5m Great White shark had swimmers scrambling for shore yesterday as it cruised
along Adelaide's suburban coastline.

The shark was one of three sighted off Tennyson, Henley Beach and Glenelg.

It was spotted from the air about 200m from the Henley Beach jetty about noon.

The sighting led to the shark siren being sounded twice in one hour.

Waters off Henley Beach were quickly evacuated by surf lifesavers.


Kasia and Belinda Wolak were swimming at Henley Beach when they heard their first
warning siren.

"We were in the water up to our knees and there were plenty of others in as well
when the siren went off," Kasia, 24, of Oakden, said.

"Everyone just got out of the water and went back in a little while later.

"We didn't see it though."

Belinda, 16, said sharks were just part of the whole beach experience.

"You're going to get sharks and other creatures in the water," she said.

"You grow up with that kind of thing. You get used to it."

Grace Lupoi, 39, of Mile End said she and her partner Gerard Tramaglino, 40, were
"paranoid" about sharks.

The couple and their two children Bianca, 7, and Gabriel, 5, got to Henley Beach
shortly before the first siren sounded.

"We're paranoid about sharks ? we worry about it because they're getting closer and
closer," Ms Lupoi said.

"Regardless of the warnings, we don't let the children into the water past their
knees. We stayed despite the warnings because the danger's in the water.

"The kids like playing in the sand and collecting jellyfish."

Grantley Anderson, of the Grange Surf Lifesaving Club, was one person who caught a
glimpse of the shark.

"All I saw was its fin," Mr Anderson, 64, of West Beach, said. "I'd say it was
chasing a school of bait fish up and down the coast."

Mr Anderson said swimmers had not been in a panic about the sightings and were
treating yesterday like any other hot day at the beach.

"Everybody's a bit casual about it really," he said.

"I guess that's because it has been ages since we had an attack this far north.

"There's not a lot we can do except warn the public and keep them informed."

Shark expert Andrew Fox said the sharks probably were following food down the coast.

He said with the public out in force to soak up the good weather, it was not
surprising the sharks had been sighted.

"It's ideal conditions for spotting shark with lots of people on the beach. It's not
that surprising," Mr Fox said.

He said there would be "a couple of thousand" sharks living off the coast of South
Australia.

"They live among us and around us all the time and just about always they choose to
ignore us," he said.

Experts believe the shark seen yesterday was the same one which menaced fishermen
off St Kilda on Saturday.

The men were in their 4.8m powerboat about 10km off the coast in Gulf St Vincent
when the shark appeared and bit at the outboard motor.

No damage was done to the boat in the incident.

http://www.news.com.au/common/story_...55E421,00.html