After the second shark attack, all the people on the beach go into Heroic Bystander mode: parents run into the water to rescue their kids and pull anyone out who's still in the water.
Michael's friends pull him out of the water when he goes into shock. They could have left him but turned around to save him.
Crosses over with Tearjerker, but a deleted scene shows the guy on the other boat throwing Sean to the side as the shark eats him.
Mrs. Kintner slaps Brody and chews him out, although her son's death was the council's fault; Brody wanted to close the beaches but was overruled. After she walks away from the scene, Mayor Vaughn attempts to gently console Brody, addressing him by his first name: "I'm sorry, Martin, she's wrong."
Martin is relieved his son doesn't have a scratch on him and wraps him in a beach blanket. He's still Chief of Police, but he's also a dad.
The scene with Brody and his youngest son Sean at the dinner table.
At one point Brody accidentally pulls on the wrong rope and causes Hooper's tanks to tumble to the deck. Hooper, stressed, yells at Brody but Quint sends him away... and then quietly tells Brody that, if he is ever unsure about what to do, just ask him. It shows that while he is gruff Quint has come to like Brody and isn't just a raging drunken bastard. The very next scene shows Quint teaching Brody how to tie a knot. While he does laugh when Brody messes up, it isn't cruel and it is clear that Brody doesn't feel picked on.
While he is rude and vulgar and mean with almost everyone else he almost always is just, at worst, gruff with Brody. He clearly sees that Brody might be the only sane person on the island and he never goes out of his way to mock him.
Quint makes clear that he dislikes the rich and people who don't work hard, which is why he busts Hooper's chops. But he knows that Brody is a hard working cop just trying to get by and thus relates to him, so what mockery he does give (such as teasing Brody about "Bringing his rubbers") comes off more like a pal ribbing on a friend.
When they are first discussing the hunt with Quint he tries to convince Brody to just let him do it on his own. This comes off as him not wanting Hooper aboard but it can also be seen as Quint, knowing Brody is afraid of water and also knowing just how dangerous things are about to get, trying to gently give Brody an out. And when he doesn't he accepts, respecting that the chief is going to go with him despite his fear.
When every single one of his attempts to kill the shark ends up failing and stranding himself as well as Hooper and Brody on a sinking boat with the shark closing in for the kill, Quint swallows his pride and turns to Hooper for advice.
Even better is the silent admiration and respect that Hooper has gained from Quint as the former suits up to face the shark with nothing but a glorified spear and a "protective" cage.
An understated moment: as Hooper descends in the cage, Brody gently taps his head to remind him to take off his glasses. He looks almost paternally concerned as Hooper goes down.
When Brody and Hooper reunite after the shark's death, they share a good laugh and then Hooper asks Brody about Quint. When he gets a solemn "No" for an answer, Matt is visibly shaken and saddened. It's pretty obvious he had come to appreciate the good ol' Captain.
Before that, when Quint and Brody pull up the empty, mutilated shark cage and naturally assume that Hooper is dead, it's clear that they're both shaken by this, and Quint has a moment (just before the shark leaps out of the water) of genuine anger, indicating that he'd come to sincerely respect Hooper as well.
Doubles for Nightmare Fuel, but during the 'comparing scars' scene you can see the dawning horror on Hooper's face who, until now, had been very drunk and rowdy, when Quint reveals he was on the USS Indianapolis. Hooper, being a marine biologist, knows full well the horrors that the bullying, erratic skipper had been through and shuts his mouth out of respect.
Generally the ending of the movie. We see Brody and Hooper swim back to shore on their makeshift flotation device, all the while the happy part of the movie's theme song plays. The movie closes on them safely reaching the shores of Amity, no doubt about to share the good news with the townsfolk. It's the relaxing sense that after everything that's transpired, everyone will be at peace.
Dernherder is still on the dock when his fellow fisher Charlie gets pulled out to sea and chased by the shark due to their ill-conceived attempt to catch it. Despite the danger and fear that would be expected, he sticks around, encouraging Charlie to swim. It's clear from the dialogue he cares. Then Charlie reaches the dock but can't get purchase on the slippery wood. He screams desperately for help, and Dernherder bravely reaches down to pull him up, despite the killer shark getting closer with every second.
After the July weekend incident, the Brodys are at the hospital with Michael. Martin sees Larry walk in and tells his wife to take Sean home. She asks if he means returning to New York. Martin gently clarifies home on Amity, showing that he has no intention of leaving Amity while they have a shark problem. Ellen affirms with a silent nod, completely on board with the decision to stay.
When Ellen calls to check in on Brody rather than ignore the call Quint (while admittedly in a hurry and not bothering to make it sound good) quickly spins a lie that they are just fishing and having a good time and are completely safe. He doesn't want to worry her any more.
