headcanon: Don Sertori believes in mermaids. it's said several times in the show that he knows the waters of the gold coast like the back of his hand. he's a seasoned fisherman, and a lover of the outdoors, who isn't afraid to visit Mako. obviously the original mermaids would've been a bit older than him, but still, it doesn't seem farfetched to me that he could've seen Julia or Louise when he was a teenager and they were in their twenties. he knows no one would ever believe him, but it's part of why he respects the sea as much he does. he knows it holds secrets and magic.

of course, he still has no idea about his own daughter being one. but when he does eventually find out (bc I firmly believe Cleo and Emma eventually tell their families), he takes it in surprising stride. when Cleo questions his chillness, he admits that this isn't the first time he's seen a mermaid.

Lewis is not impressed by the magic of golf....... H2O: JUST ADD WATER | 3x09 "The Sorcerer's Apprentice"

me when i hit my breaking point

"The male of the species is a predatory creature, Lewis."

If I had a nickel for everytime when in season one someone was like 'The best option is nobody, but second best option is Lewis' I would have two nickels, which isn't a lot, but it's weird it happened twice

on every single level, sam and don's wedding is an absolute disaster. let's see, we've got:

•lewis losing the rings

•cleo fighting with her boyfriend IN FRONT OF EVERYONE AT HER FATHER'S WEDDING. the secondhand embarrassment i experienced was unbelievable

•bella wearing white to another woman's wedding

•the costuming in general like. look what they did to cleo and rikki too

•kim setting off the sprinkler so the ceremony never happens (i have so many questions. obviously don and sam have another, private ceremony on mako island but... do all of their wedding guests from the first ceremony just assume they never got married? they don't know about the second wedding unless someone tells them later... kinda funny tbh)

with all that being said, this is probably one of the best episodes of season 3 and one of my personal favorites

I'm watching H2O again and I'm on season 2 and I need somebody to tell me not to simp for Cleo's dad 🫣 something about fictional dilfs just gets to me. Tell me not to write a fanfiction where an older mermaid comes to the Gold Coast and marries him

don sertori telling cleo to take kim to a concert that her mum can't go to even though she bought the tickets for her and kim to go together is just. soooo devastating. like a few episodes prior cleo's dad says their mum left and has a new life but the girls can see her whenever they want which is so ostensibly NOT true if she can't take kim to one (1) lousy concert. honestly tbh we as a fandom do not discuss this enough

missed the boat (02x10) is one of, if not my favorite, episode of h2o but don sertori, bane of my existence and most annoying father, is really in FINE FORM that episode. Cleo got ONE bad mark in a class, which is unusual behavior for her, and he isn’t even attempting to have an understanding conversation about why, he just immediately says she has too much fun with friends and she’s grounded until she passes. it’s ONE test Don. please just listen to your daughter for once and try to be kind. one bad grade isn’t the end of the world and, dare I say, doesn’t require any sort of punishment.

i truly can’t stand Don and how he treats Cleo. he consistently refuses to parent Kim and then leaves all of said parenting to Cleo (aka when Kim snuck out to a party and he blamed CLEO even though he knew she would be out of the house and busy that night). he has a couple of good moments but most of the time he’s punishing Cleo for things she didn’t even do and expecting her to keep her younger sister in line while conveniently ignoring both of them.

Ok I’m not saying S3 is the best season by any means because we all know it’s got some Issues, but I do really love how Cleo’s character development in it.

I actually don’t think that she’s acting unlike herself for most of the season. Cleo’s been through a lot over the years, especially in season 2- her mom leaves, she has a major breakup, and then one of her best friends moves away. It makes sense that she’s not as innocent by the end of the series as she was at the beginning of season 1, especially if you consider that she goes from being 15 to being around 18 by the time the series ends. With her mom leaving, she’s forced to step up at home, and especially how her mermaid powers go sort of off the rails in the first episode of S2, I think it makes sense that she’s irritable and jealous and not always her best self that year. That’s a lot to be dealing with for a teenager! There’s absolutely times when she goes too far, especially with how she treats Charlotte. But it’s also unfair how the narrative punishes the girls (especially Charlotte, again, but this post is about Cleo lol) for basically being teenagers with a ton of responsibility and other stuff just sitting on their shoulders.

By the time we hit S3, it feels like Cleo has sort of hit her stride with dealing with her mom being gone. She feels more grounded and in a way that feels sort of like a natural continuation of her development in S1- becoming more self-confident, less naive, etc. I don’t think people give Cleo enough credit for being smart, even before S3. Sure, she’s sort of innocent and sheltered, but she also mentions being in calculus in like the third episode, and it’s clear that she and Lewis have been study partners for a long time, and they might not have developed that habit if they weren’t in at least most of the same classes. She doesn’t seem to ever really struggle academically until S2 when her breakup with Lewis sort of suddenly forces her to change her study method. The way that Don reacts to her failing an exam makes it seem like that’s very out of character for her (although is also a little bit of Don Sertori overreaction...) In any case, her having at least some history of doing decently in school means that her increased academic success in the last year isn’t completely out of left field.

As an aside, it’s also great to see her and Lewis just sort of, existing as a couple? For a whole half of a season? Which is not something that we get to see a lot of in the previous seasons. Most of their development centers around them getting together, breaking up, and getting together again, which is entertaining, but I love seeing how they interact as a couple who aren’t just focused on the will they/won’t they aspect of their relationship. In the first half of S3, you can see how the two of them work together trying to solve the mystery of the tentacle. It’s Cleo who’s determined to find the answer when they’re attacked, and it’s her who comes up with an idea to help Lewis find an alternative science project when she inadvertently messes his original idea up. Then, when Lewis has to leave mid-season, she’s matured enough to be willing to step up and do the work by herself. It’s unfortunate that it feels like Lewis has to leave for her to realize her full potential, but I like to think that if he’d stayed she’d have developed the same anyway, especially with how invested she was in figuring out the water tentacle in the first few episodes.

I don’t feel like she loses herself this season- she still feels like a mediating force who just wants people to get along, but she’s not afraid to call others on their shit when they’re acting out of turn, like Zane (S2 Zane would never, but again, we’re talking about Cleo...)

I might be sort of biased, because I relate a lot to her development this season- I too am someone who for years was perfectly decent at math/science but preferred the humanities and liked to make fun of my friends for being science nerds, but my last year of high school took some advanced science courses, ended up being a STEM major in undergrad and now has a graduate degree. And I also relate a lot to her struggles with stepping up into the “leader” role- it’s something that I struggled a lot with in high school as someone who was sort of the quiet one, but as I got older, I got a lot more self-confident and now fall more into the same “well if no one else is going to step up, I guess I’ll fucking do it” category. In any case, I don’t see her development in season 3 as being a completely different person, just as someone who’s grown up and through a lot of difficult scenarios over three years fully maturing and coming into her own.

Don Sertori is a shit dad.

Guys, we really need to talk! H2O: JUST ADD WATER | 2x21 "And Then There Were Four"

not don and sam breaking up because they were taking things too fast just to get ENGAGED in the same episode 💀💀

There is eternal chaos in the Sertori family. Two sisters - Cleo and Kim are still arguing. Some reasons are trivial, but Cleo is very nervous when she discovers that someone has broken her MP3 player. She suspects her younger sister. She tells her that. Kim declares that she can also start doing his washing, because although she pays her, she does not want to do it any longer. He splashes it with water. Fortunately, Cleo quickly runs to her room and only then turns into a mermaid. Kim announces a strike. Cleo tells Kim not to talk to her anymore. Soon their cousin Angela is coming, whose parents are just going through rough times. So Don and Bev ask their daughters to be in agreement at this time. Angela gives the girls compliments from the very entrance to their house. It seems to be nice, but it is only appearances. He talks to Kim and tells her that she is very sorry for her, because Cleo seems to be conceited. She uses Kim to carry her suitcases. In turn, Cleo tries to talk about Kim. They talk about the fact that Kim is very childish. Cleo also succumbs to her and unconsciously ministers, hanging her things in his closet and lending his own sleeping room. Kim refuses to give her cousin the inclusion of her music CD on TV because she is watching an important school documentary that was about to end. Angela, bored when she doesn't look, steals her book. Kim accuses Cleo of it. She gets a warning from her dad. It is supposed to take both girls to interesting places, because their cousin can't be in front of the television forever. Cleo and Lewis take them to the water park. Lewis does her homework in the water slide with the girls. After some time he comes home. Cleo and Mitch show them pelicans. Angela is lost. Both are looking for her. After all, Cleo can't find Kim either. Cleo notifies the police and returns home. She meets Kim there and a bird in the bathroom! Rikki, Lewis and Emma come to the rescue. They put the rig in the carton, and Cleo blames Kim for that. She brings the pelican back to the park, but Mitch notices it and accuses her of having taken it. It turns out, however, that he is not from this park, and Cleo is praised for the help she gave the bird. Meanwhile, her friends find Angela swimming on a boogie board. She wants to have servants again and asks the girls for a towel, but they don't give in to her. At home, it turns out that it was her cousin who took a pelican from another park and brought her home for a swim, and Cleo and Kim quarrel and get into trouble. Cleo invents her punishment - cleans pelicans' droppings in the water park. Kim is apologized by her sister for unfounded suspicions and buys her first MP3. It is blue. Kim, however, wants to replace her, because this color likes the least. The girls are starting to argue again.

happy father’s day to neil gilbert, terry chadwick, and season 3 don sertori!

Pluto: The Fish

The fish tank was glowing, well, Pluto was glowing. He watched Cleo sleep as his cock expanded, filling up the tank and the sheer girth killed the other fish. As Pluto stepped out and onto the carpet with his newly formed Fish Legs Plus™ his enormous cock started to get hard. Pluto gently peeled back Cleo's duvet and her shorts, he took his length -40 inches- and stroked it, and all of a sudden Kim walks in and Pluto's cock was like a brick. Pre-cum layed on his tip and Kim stares, Cleo starts grinding on Pluto, while Pluto fucks Kim. Kim sprawled across the bed moans and so does Cleo. Constant grunts and whimpers leave Pluto. "what's going on up there Cleo?" Mr. Sertori calls from downstairs "Kim, you need to get ready for school" in Cleo's room Pluto pulls out of Kim and thrusts his 40 inch into Cleo and she screams in pleasure. "Girls. I'm coming up" Don calls. A minute later he's standing in the doorway and his girthy cock stirs in his tan khaki shorts. He comes up behind Pluto and thrusts into his ass. Pluto moans and unexplainable pleasure comes upon him. Don grunts as Cleo and Kim watch, which only makes him harder. Cleo moans her dads name, his grunts become louder. Kim licks the tip of Plutos dick. Pluto keeps moaning and Don thrusts into him rougher each time. Pluto's moans are pornographic, miles away Cleo's mum wakes up surrounded by her own cum, she looks out the window, its too late to be up and its too quiet for anything to have awoken her. She gets into her car and drives to her ex-husbands house, when she enters the neighbourhood she starts to hear odd noises. She knocks on the front door, no answer. she decides to climb up a palm tree to Cleo's room. The noises become louder and louder. She looks in the window, soaked already and opens it and climbs in. Don stops pounding Pluto for a second and walks up to Deb. He  grabs her and puts her face into the fish tank where they had been storing Plutos cum. Deb starts to struggle but eventually she drinks some and develops gills on her neck as Don fucks into her from behind. Pluto walks over and grabs the fish tank off Cleos bedside table, and tips the cum onto cleo and Kim, who had been sucking his cock. Cleo screams, cums, and turns into a mermaid. Pluto moans and says "that's more my type" in a deep voice.

Hey Babycheeks, don't you love this H2O special we cooked up just for you? We took extra care in preparing this one, and I think you can tell how much joy this brought us. Anyways:

I will put u in my pocket!?!!!!