At Bloomfield, on Queensland's Cape York, Alec Dunn was testing crab pots when the massive 4.5 m reptile emerged in the water alongside his boat. The giant croc, known as Tommy, had been swimming under Alec's boat before broaching the surface, resembling a dolphin's seafaring motions.
The clip was posted by 7News, with Alec telling Cairns Post: ‘He came up with this growl and locked eyes with me. I was only in a 3.5m tinny and he cruised right next to me. It was interesting.’
He added: ‘[Tommy] was gaffing it for that deep water. He was sizing me up and I thought he was going to go for the tinny, but lucky he didn’t.’
The crocodile guide David White from Daintree River told the MailOnline that the action of the crocodile was odd, even dangerous.
‘That’s an angry dive down, not one we usually see when they are just hiding. That’s a p*ssed off croc,’ he claimed.
In real life, it is like Lake Placid. One Reddit user wrote when he saw the video: 'They always knew they could move really fast but never seen it. That's nuts. '
But Daniel Rumsey, the Head of Reptiles at Australian Reptile Park, wasn't so careful of Tommy's dipping and diving, revealing to Gizmodo that 'crocs usually don't crack while they're going quickly like in the footage.
He added: ‘When they’re in a predatory mode, they swim below the surface, barely making a ripple on the water. When they do come to the surface, they’re coming up for air. The croc in the video breaking the water’s surface could just be because of the speed that it’s moving. It could even be moving over a log underwater.’
Although adult crocodiles can achieve speeds of up to 20 kilometers per hour, they are 'ambush predators and are unable to manage long-term swimming at a high speed.' Tommy definitely slowed down when Alec started filming.
Image Credit: 7News/Alec Dunn
Video Credit: Youtube