For most it would bring back terrible memories of the scene from Jaws when the immortal line ‘you’re going to need a bigger boat’ was uttered.
But when a team of divers spotted the largest great white shark on the planet they only hesitated to grab their cameras before they jumped into the sea.
The enormous predator named Deep Blue is up to 50 years old, weights 2.5 tons and measures 20ft long.
It was drawn to the water around Hawaii for what one diver described as an ‘all you can eat buffet’ – to feed on a dead sperm whale.
Deep Blue was last spotted in Mexico in 2013 where it was fitted with a tracker which is how divers were able to identify it this time.
Conservation photographer Juan Oliphant was one of the divers who took the plunge along with with marine biologist Ocean Ramsey
Remarkable photos shot by Oliphant show him and Ramsey swimming right next to the enormous predator.
Posting on Instagram shortly after the swim, Oliphant wrote: ‘Face to face with the worlds largest great white ever recorded ‘Deep Blue’ with @oceanramsey.
‘I’m still in shock that we spent almost the whole day with this amazing animal in my backyard.
‘I hope my conservation images like this help people to question their perceptions and realize the beauty, and importance of sharks and I hope that they inspire the kind of compassion and connection we need to have with nature and sharks, to help protect them and coexist alongside them.’
Another diver who swam with Deep Blue. Kimberly Jeffries, wrote: ‘If you asked me a few days ago what the most amazing thing I’ve ever seen in Hawaiian waters the answer probably would be pretty different.
‘If you asked me yesterday the answer would be freediving with Deep Blue, a great white, the largest ever documented, who was last seen in 2013 in Mexico.
‘If you asked me right now, it would be freediving with, interacting with and photographing not one but multiple, different great whites AND Deep Blue.’
Great White Breakfast
Footage of Deep Blue was also captured back in 2013 by shark researcher Mauricio Hoyos Padilla off Mexico’s Guadalupe Island.
The video shows the enormous apex predator swimming near researchers in steel cages, with one bold enough to be swimming outside the protection of the protective metal bars.
The massive predator was also featured back in 2014 in a Shark Week documentary, when researchers tagged the gigantic fish.
Great whites, the largest predatory fish on earth, typically grow to 15 feet in length, with some, like Deep Blue, exceeding 20 feet in length and weighing up to 5,000 pounds, according to National Geographic.
German tourist Michael Maier also described filming the predator during a 2014 trip to Mexico.
Mr Maier, 48, said: ‘Deep Blue is a very large female shark and she is known to be found in Mexico. When we entered the water we had to wait because there was nothing to see.
‘All of a sudden out of the deep blue, there she came. We realised almost immediately that she was very big.
‘She was very calm and not at all nervous and was circling us. She was very interested and was looking at us.
‘During the circles we realised just how big she was – she must have been something like seven metres long. Everything was very well prepared. The whole team felt safe.
‘We had a very long beautiful dive with her and we were all very much enthusiastic about the encounter.’
George Burgess, director emeritus of the International Shark Attack File at Florida Museum of Natural History, told ABC News: ‘It’s a very big white shark, obviously.
‘One of the largest that has ever been seen in the water. She’s a big girl.’
The shark got her name from Discovery Channel diver Mauricio Hoyos Padilla, who swam with the creature as part of a Shark Week documentary.