Freddi Fish: ABCs Under the Sea (sometimes calledFreddi Fish: ABC's Under the Sea or Freddi Fish: ABC Under the Sea)
The series also spawned multiple children's books (not all of which may have been published), including Freddi Fish and the Pirate's Treasure, Freddi Fish Notebook, Freddi Fish: A Whale of a Tale!, Freddi Fish: Boek is Zoek, Freddi Fish: Color and Activity Book, Freddi Fish: De Geheimzinnige Brief, Freddi Fish: Help! Een Draak!, Freddi Fish: Kleurenfestival, Freddi Fish: Leesplezier voor Beginnende Lezers, Freddi Fish: Meester Zeester in Nood, Freddi Fish: Superleuke Rekenoefeningen, Freddi Fish: Superleuke Schrijfoefeningen, Freddi Fish: The Big Froople Match, Freddi Fish: The Missing Letters Mystery, Freddi Fish: What's Different?, and Sing Along with Freddi Fish and her Friends (doubling as an Audio Adaptation). Additionally, the album Flabby Rode features the Dummied OutCut Song "Fat Chants 2" from Freddi Fish and the Case of the Missing Kelp Seeds.A demo version of The Case of the Haunted Schoolhouse can be downloaded from Infogrames, and a clickpoint demonstration of The Case of the Creature of Coral Cove can be played or downloaded from Spektakle.
Brats with Slingshots: The closest thing Freddi and Luther have to a Weapon of Choice, though they never directly aim them at anyone. The one in The Case of the Haunted Schoolhouse is actually a very high-tech device, complete with an attached targeting computer. The ones in Water Worries are more basic slingshots.
Freddi, Luther, and Eddie the Eel have an unused cutscene that can be unlocked by adding "EddieEatsLuther=1" (after the first time, that and "BretIsTheOverlord=1") to the game's section in the INI file.
The handle of the sword stuck in the barrel on the sunken ship's deck has two unused animations that can be unlocked by adding "EnableFishBradSword=1" (after the first time, that and "PeteIsAlsoTheOverlord=1") to the game's section in the INI file.
Freddi has an unused line that can be triggered by getting all five trap parts then checking the list (which can only be done by using the game's debug mode or ScummVM's debugger).
An unused Level Editor exists, and it is fully-functioning. It can be accessed by typing "room 13" in ScummVM's debugger.
An unused early version of the Squoosh arcade mini-game from Putt-Putt Travels Through Time can be accessed by using ScummVM's debugger and typing "room 6." This version of the mini-game has four different pictures to reveal: the Seattle SuperSonics' '95-'01 logo, Luther pulling his fins out from the Junkyard Dogfish's mouth (a scene from Freddi Fish and the Case of the Missing Kelp Seeds), Pep licking up Putt-Putt's vomit while Putt-Putt watches, next to Chuck Wagon (a Dummied Out scene from Putt-Putt Saves the Zoo), and 30 live-action people.
An unused Level Editor made for the developers exists, but it is unknown how to get it to test levels. It can be accessed either by adding RhettCool=1 to the game's section in the INI file and pressing "e" at any time during the gameplay, or by typing "room 5" in the debugger.
The Case of the Stolen Conch Shell:
The Conch thief's bag is an inventory item that can only be obtained by using the game's debug mode or ScummVM's debugger. It cannot be selected or used.
The Case of the Creature of Coral Cove:
For whatever reason, the very beginning of the game's HE4 file has the toy store theme from Putt-Putt Joins the Parade.
Early-Bird Cameo: SPY Fox appears in one of the theater movies for Freddi Fish 2, who didn't debut until a year later.
Fictional Currency: Purple sea urchins. There are at least five variations, all of which are more valuable: red sea urchins (worth two purple ones), blue sea urchins (worth three purple ones), gold sea urchins (worth four purple ones), and orange sea urchins (worth more than four purple ones; exact value unknown).
Fifteen Puzzle: Freddi Fish 2 has a sliding puzzle, but it's completely optional to complete. The only time you actually need to use it is if the trident is being held by the statue below it, and even then, you still only need to clear one space.
Gentle Giant: In Freddi Fish 5, the sea monster Xamfear Duncan Dogberry Valentine turns out to be one of these.
Geographic Flexibility: ABCs Under the Sea takes locations from the first, fourth, and fifth games and puts them in completely different places. Grandma Grouper's house from the fifth game even appears twice (well, either that or she got a duplicate house)!
Grand Finale: Case of the Creature of Coral Cove is this for the series and Humongous in general, as it was the last adventure game produced by Humongous before their buyout from Atari. They went out with a bang, too- it's probably the most solid of all the Junior Adventures.
Guilt-Based Gaming: Luther will sometimes say this if you hit the "Stop" button at the end of the first game:
Hammerspace: To the point where it gets lampshaded in the fourth game, after Freddi manages to store an entire piece of wood.
Luther: How did you do that?
Freddi: That's my special secret.
Heel Face Revolving Door: The Junkyard Dogfish. In The Case of the Missing Kelp Seeds, he's hungry and growls at Freddi and Luther (biting Luther's tail fin if Freddi and Luther swim too close to him) after Luther accidentally wakes him up, but once Freddi gives him a bone he thanks her and leaves. In Maze Madness, he keeps chasing Freddi no matter how many times he takes a Peanut Butter and Jellyfish Sandwich from her. In ABCs Under the Sea, he (supposedly) sorts the junkyard's trash, and is happy to let Freddi and Luther help him sort it.
Invisible Parents: Despite being mentioned on the old Humongous website, Freddi's parents never show up in-universe.
Logo Joke: In comparison to the other Humongous games, the font on the "It's a Junior Adventure!" logo is light blue instead of yellow to give it an ocean-like feel (with the exception of the fourth game which goes back to the yellow scheme, and the fifth which lacks it altogether).
Long Title: All the main games. Just look at the top of the page.
Point of No Return: Finding the last Plot Coupon usually acts as this; e.g. the last clue bottle in Kelp Seeds moves you on to the sunken ship or the last golden pipe in Stolen Conch Shell moves you on to the temple.
Poison Mushroom: Water Worries has Wiggler Worms, which cause Luther or Freddi to wiggle around for a period of time, effectively enlarging their hitbox as well as making it harder to aim at smaller bubbles.
Seldom Seen Species: The coconut crab from the "Crab Invaders" minigame in "The Case of the Haunted Schoolhouse", Nadine the narwhal from "The Case of the Stolen Conch Shell", and the jawfish from "The Case of the Creature of Coral Cove".
Translation Train Wreck: In-universe example—Freddi Fish 3's foreign language phrase book turns everything into Word Salad Humor, with only plot-significant phrases surviving enough to be understandable.