The shark doesn't even eat the body. It leaves the corpse more or less intact to be discovered in the most horrifying way possible -- by prison-smooching a teenage girl:
Later on, an English crocodile-hunter-type guy tries to defeat the shark, but ends up tumbling into its mouth like a stupid dumbass:
"Balls. I should've seen this coming."
But rather than simply bite the man in half with its Truckasaurus teeth or swallow him and be done with it, the shark just lets him sit there and drown as it slowly crushes him to death against the roof of its mouth:
This is seriously like two or three of man's greatest fears combined in a single hateful killing.
In one last desperate stroke of hopeless terror, Crocodile Hunter scrambles for a grenade to try to blast them both into merciful oblivion:
But the shark delivers a fatal crushifying squeeze that pulverizes Crocodile Hunter before he is able to pull the pin. And when his ribcage burst, he probably inhaled a lung full of water involuntarily, so he got to enjoy the agony of drowning while his organs liquefied. His dead body then gets paraded around for the remainder of the film, perfectly visible inside the shark's mouth and frozen in a Black Power salute.
Not pictured: dignity.
At the end of the movie, the shark corners Louis Gossett Jr. in a flooded control room with two members of his staff -- his nephew and some random white lady.
It should be clear from their expressions which one of them is about to be killed by a shark.