Jjk characters at the beach in no particular order
Shoko: Drinking Vodka and limes on a beach chair under an umbrella, gets up every-once and a while to help look for shells.
Megumi: hiding from the sun like it’s personally wronged him scowling at the world until Nobara Yuuji drag him into the water. May or may not be watching Yuuji with heart eyes, also may or may not have dumped a bucket of water on Gojo while he was sleeping, has ear buds in listening to emo music because Gojo blasting pop.
Maki: destroying everyone at beach volleyball, plops down into Yuta’s chair with snacks every once in a while insisting he stay hydrated, aggressively eats beef jerky sticks.
Yuta: cheering her on, helps with the shell pursuit every now and again was controlling the music with Megumi but got reassigned for to much my chem.
Gojo: bugging Megumi, fawning over Geto, stealing Utahimes beach chair when she gets up to look for shells, splashing water on Yuuji and then getting into a water gun battle with Yuuji and Geto who then join sides to fight Maki, Nobara and Inumaki, also floating on an obnoxious unicorn floaty, catches a crab with his bear hands and puts it on Utahime while she naps. He’s a man of many talents.
Yuuji: playing in the water, having a float war, seeing how long he can hold his breath, drowning Sukana when his mouth appears to catcall girls, gets a horrid sunburn, gets pinched by a crab, briefly looses his swim trucks, gets shit on by a seagull and eats all the snacks, gets sand on Nobaras beach towel and has to sit on the cooler.
Nobara: Cheering Maki on, on a floaty in the water until Yuuji tips her over so then she drowns him for a bit, tanning, drinking mock tails and looking up all the cool shops she wants to go to.
Utahime: Collecting Shells, gets swarmed by seagulls for her turtle candies, finds a nest of sea turtle eggs and takes photos before relentlessly defending them from Gojo, has an obnoxiously large beach hat, wears mascara and gets water dumped on her because of Gojo so she looks like a panda but it’s okay because her and Shoko have a lesbian moment where she cleans her makeup off.
Inumaki: Is squirting people with water guns, in charge of making sure the cooler has ice, has obnoxious sunglasses, rice ball print swim trunks and a dream.
Panda: I— is he sandy like a dog? Does he smell like wet dog when he’s swimming? I don’t know.
Miwa: Also collecting shells, living her fujo dreams with Satosugu, may be writing fanfic about them, face timing Kokichi because his ass is a robot and can’t be on the beach.
Todo: He’s with Yuuji, making snide comments about Megumi, who’s death glaring him, collecting shells that remind him of Tanaka or Yuuji, catches a shark with his bare hands just because he can.
Mai: she’s in some super expensive bikini sitting under an umbrella with Nishimiya with a plate of sliced cucumbers and a scowl. Maybe exfoliates  her legs with sand, might dip her toes in. Definitely gets throw in my Todo.
Nishimiya: probably hits a seagull with her broom, does not get in the water. EVER. My girl has curly hair I can feel it in my bones.
Geto: He sits with Shoko for a bit, shares a drink and a cigarette, takes some beach photos of his daughters, looks for shells. Has a competion with Gojo to see who can blow up a float faster, he’s the drink mixers because he’s weirdly good at it. Probably has sandwiches on hand for his daughters, sets up their umbrella and beach chairs. Him and Gojo probably sneak off together at sunset.
Naniko: Takes bikini pics, gets a tan, looks for shells.
Mimiko: Snorkels, makes friends with a seagull.
Mei Mei: on the nudist beach.
Nanami: fishes, brings a cooler and a camping chair, teaches Itadori tips. Gojo steals his fish and gives it to a seagull.