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Aquatic Mook

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Your basic Mook, now for aquatic environments. They generally come in two types: an enemy specifically designed for aquatic levels, typically based on marine animals, and regular land-dwelling mooks repurposed for a new environment by being equipped with scuba gear (masks and air tanks), becoming more fish-like, or the like. This second option most commonly occurs with the Mascot Mook. Regardless of type, you'll definitely encounter them Under the Sea, Down the Drain and even in the Bubblegloop Swamp.

If it is an underwater level, then the hero is also given swimming skills so they can face these mooks as if they were on land; the difficulty in this case is that the jumping on head option is usually taken away, making it impossible to avoid Collision Damage (and forcing you to just avoid these guys) unless some other weapon is given. The other option (when on land) is that these guys jump in and out of water where they are unapproachable because of the hero's Super Drowning Skills, so you have to hit them while they are out of it (if they can be damaged, that is). Some games (like Super Mario Bros.) may have the same enemy show up in both roles, others will have different ones for the two environments.


Compare Gas Mask Mooks, similarly suited for unfriendly environments, and Airborne Mook for mooks that take to the sky instead of the sea.


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    Video Game examples 


  • Ecco the Dolphin is packed with hordes of these, given that most of the series takes place under the ocean.
  • The Legend of Zelda:
    • In 2D games, this role is filled by the River Zoras, fish people who sit in the water — and thus stay well out of Link's reach unless he's obtained whatever item lets him swim in a given game — and spit fireballs at him.
    • In 3D games, their place is largely taken by Octoroks, who behave in the same manner.
    • The Legend of Zelda: Twilight Princess features neither River Zoras nor Octoroks, but has Toadpolis who behave in the exact same manner.
    • Skullfish are skeletal fishes only found in watery areas, where they patrol waterways and attack Link when he wades or swims in.
  • Machine Hunter have Swamp Mutants from the swamp level, who attack the player by launching bubble projectiles from underwater. They're not amphibious and can only attack from a distance, but since they're underwater they can be hard to hit without homing missiles.


  • Contra: The arcade version has two of these that jump out of the water at the beginning of the game, and nowhere else.

Beat'em Ups

  • Justice League Heroes: The Flash has aquatic Mecha Mooks introduced in the Sunken City level. They start with a water barrier that protects them, and after you destroy it they'll sometimes return to the water to replace it.
  • Ultra Toukon Densetsu has both Goomba-type enemies, Bemlars and Ragons, being aquatic monsters who leaps out from nearby rivers and lakes to assault the player. The latter is slightly harder to beat due to having tridents it can hurl from a distance.

First-Person Shooters

  • 8Bit Killer: stage 3-2 is home gun-toting enemies who use their diving suits to submerge in water to catch you by surprise.
  • Deus Ex has a few Diver enemies on the way back from the underwater lab.
  • Unreal features serpentine humanoids who can attack you both on land and in water.


  • Banjo-Kazooie: The first game has only one aquatic enemy, but it's noteworthy. The Snacker is a blue shark that appears into scene whenever Banjo and Kazooie are swimming in the waters of Treasure Trove Cove (the only safe part is the water surrounding Captain Blubber's ship). Snacker returns in Rusty Bucket Bay, guarding the southwest waters (the one with a buoy where a yellow Jinjo is).
  • Banjo-Tooie: There are many in the underwater realm of Jolly Roger's Lagoon, including creatures so large that can only be stunned temporarily (such as the Blubbul and the Inky). There's also a Helpful Mook (the Seemee, a transparent fish) that doesn't attack the characters; instead, it swims peacefully while keeping an item inside its belly. There are six specimens, of which three have a valuable object: One guards a Cheato page, one guards an Empty Honeycomb, and one guards a Jiggy; Kazooie can use the Talon Torpedo ability to take the items without killing the Seemees.
  • Commander Keen: The fourth episode has the only underwater level in the game, so its aquatic bestiary makes it stand out: Underwater Mines (self-explanatory), Sprites (white Atlantean-like creatures that shoot energy beams from their tridents), and the massive Dopefish (a large, overgrown green fish capable of eating Keen in one bite).
  • Donkey Kong Country has a great variety of water-dwelling enemies, resembling piranhas, sharks, clams, octopi, stingrays and other aquatic life:
    • Donkey Kong Country: Bitesizes (piranhas), Chomps (tiger sharks), Clambos (pearlclamps), Croctopus (octopuses) and Squidges (jellyfish). Bitesizes look weak due to their small size, but they're strong enough to harm the Kongs even if they're riding Enguarde; Chomps swim at a moderate speed, but their large size can make them hard to dodge sometimes; Clambos stand on the seafloors and shoot pearls at a fixed direction; Croctopus move around while spinning their extended tentacles, and are completely invincible (even against Enguarde); and Squidges move in a zigzag pattern, each with a specific speed.
    • Donkey Kong Country 2: Diddy's Kong Quest: Flotsams (stingrays), Lockjaws (piranhas), Puftups (puffer fish) and Shuries (starfish). Flotsams come in blue and green forms, with the former always swimming forward while the latter moves back and forth between left and right; Lockjaws charge at the Kongs to bite them as soon as it sees them; Puftups inflate their size and explode, unleashing their spikes into multiple directions (the number and formation depends on the enemy's color); and Shuries move around like shurikens (hence their name), with the orange ones simply moving in a diagonal pattern and the pink ones chasing the Kongs to harm them.
    • Donkey Kong Country 3: Dixie Kong's Double Trouble!: Bounty Basses (plump-cheeked fish), Kocos (clown-faced fish), Lurchins (yellow-spiked green urchins) and Nibblas (wrinkly carnivorous fish). Bounty Basses carry an item within them, be it a banana, a bear coin or even a KONG letter, and Enguarde can defeat them to claim whatever object they had; Kocos colored green either remain stationary or swim forward, while red ones swim back and forth; Lurchins either remain static or move up and down in a set path, and extend and retract their sides (exposing the pink flesh that serves as their weak point); and Nibblas act similarly to Snapjaws from Donkey Kong Country 2, in that they cannot be defeated and swim quickly to chase the Kongs and hurt them.
    • Donkey Kong Country Returns: Snaggles (sharks), Snaps (orange crabs), Squidlies (squids) and Jellybobs (jellyfish). Snaggles frequently jump out of the water to attempt to bite the Kongs, all while doing a barking noise; Snaps (also known as Snippies) move side by side, though they're not difficult to beat; Squidlies travel in the air in a straight line, being shot from wooden canyons called Squid Shots; and Jellybobs are protected with electricity, and sometimes they unleash it.
    • Donkey Kong Country: Tropical Freeze: Finleys (large fish that come in blue and red variations), Gargantuan Gills (massive fanged fish), Gordos (indigo-colored fish with robust bodies), Fritzs (moray eels capable of producing electricity), and Mama Saws (sawfish whose noses actually look like man-made chainsaws). Finleys usually show gestures of boredom and swim in various patterns, with the blue ones swimming slowly and the red ones swimming faster; Gargantuan Gills attempt to swallow the Kongs in one bit by jumping out of the water (some of them, colored purple, even manage to chew railtracks during a Minecart Madness level); Gordos act and move similarly to Finleys, but require extra hits to be defeated; Fritzs attempt to hurt the Kongs with their bioelectricity, and can teleport between spots by creating whirlpools; and Mama Saws attempt to charge at the Kongs to harm them with thir saw-like noses.
  • Jazz Jackrabbit 2 has turtles on lifebuoys. Though they only appear in one level and there's about three of them.
  • Mega Man (Classic): There's an underwater, scuba-geared version of the Mettaur enemy.
  • Metroid:
    • Aqua pirates use technology similar to the gravity suit and Aquadrones are built to patrol the depths, allowing them both to fight Samus in flooded areas.
    • Metroid Fusion: The X can combine the forms of Space Pirates and some species of carnivorous fish to make Mer-Pirates.
  • Rain World: Salamanders are a variant of the lizard family of enemies that live and hunt the best in water.
  • Spyro: A Hero's Tail: The Sunken Ruins are home to aquatic Mer-Gnorcs with mermaid tails instead of the regular kinds' legs and armed with either tridents or throwable starfish.
  • Super Mario Bros.:
    • Super Mario Bros.: The game marks the debut of the most common Aquatic Mooks in the franchise, the squid-like Bloopers and fishlike Cheep Cheeps, found on almost every occasion where Mario goes underwater, alongside their assorted stronger forms. Cheep Cheeps will also often jump out of the water when Mario is passing on platforms or bridges above them. Bloopers are found almost exclusively underwater, moving either upward diagonally or downward straight, but some of them can be seen hovering in the air in Super Mario Bros.: The Lost Levels and Super Mario Maker.
    • Super Mario Bros. 2: Trouters are red fish with large eyes that perform large jumps in waterfalls. By way of Cranium Ride, Mario and his friends can use them as platforms to quickly move to further areas in a level; this is exploited in World 5-1.
    • Super Mario Bros. 3: Boss Bass and Big Bertha are two large Cheep Cheeps that can be found in Palmtree Panic and Under the Sea levels. The former looms around the water's surface at a great speed and can swallow Mario and Luigi in one bite, thus doubling as an Instakill Mook. The latter simply swims back and forth in a pattern as it tries to keep a very small Cheep Cheep inside its mouth (since that Cheep Cheep always tries to escape). The game also features a smaller, spiky variant of Cheep Cheeps (the Spiny Cheep Cheep) that swims the waters of World 7-4; a bigger version of it (Spike Bass) appears later in New Super Mario Bros..
    • Super Mario World: Alongside regular Cheep Cheeps, a subspecies called Blurp appears; their behavior is almost identical. The game also introduces Rip Van Fish and Porcupuffer. The former is a blue fish (apparently unrelated to the Cheep Cheeps) that sleeps peacefully until Mario or Luigi approach, in which case it wakes up and chases them relentlessly. The latter is a large purple Cheep Cheep with a spiky body that moves underwater like Rip Van Fish, but looms around the surface like Boss Bass. A secret level in the outdoors top of Vanilla Dome has dolphins, which are Helpful Mooks and completely inoffensive. Lastly, the game introduces the Fishbone, a Dem Bones version of Cheep Cheeps that charges at Mario and Luigi upon sight, which will end up killing it upon crashing against a wall, floor or ceiling.
    • Super Mario 64: A cousin of Boss Bass, the Cheep Chomp, appears in Tiny-Huge Island, though strangely not in the Under the Sea levels (Jolly Roger's Lagoon, Dire Dire Docks, Wet-Dry World). They're large enough to be capable of eating Mario (and any other playable character in the game's remake) in one bite. The game also introduces Maw-Ray, a massive red manta ray that typically guards a specific part of Jolly Roger's Bay until Mario finds a way to get it out.
    • Yoshi's Island features Shy Guys with inner tubes found floating around in water levels, as well as Shy Guys dressed as pirates and found on ships.
  • Prinny: Can I Really Be the Hero?: The sequel has the "Undersea Volcano" as a playable stage, and aside from scuba-gear equipped Moabs (who will drown when hit with a hip-pound as their gear breaks), there are underwater Corn Men who can home on the player, Blue-colored Idols with a very apathetic outlook, invulnerable Sea Mines, and the predatory Serpent, aka the Shark Dragon.

Real-Time Strategy

  • Pikmin:
    • Water Dumples are aquatic relatives of the common Bulborb enemies, provided with fins instead of legs and adapted to aquatic environments.
    • Generally, all games feature one or two enemy species that live chiefly or exclusively in the water. This can present a problem to deal with, as only Blue Pikmin can swim or survive underwater and the most powerful Pikmin types are thus useless for fighting them.
  • Warcraft III: The expansion introduces the Naga, a race of Snake People, the result of magic-addicted night elves spending a few millenia underwater. They're not only capable of moving in water, they can also hide there.

Role-Playing Games

Run & Gun

  • Machine Hunter: Swamp mutants attack you from underwater by launching projectiles. They can be hard (but not impossible) to hit if you don't have a Type-6 robot equipped with homing missiles.

Shoot 'em Ups

  • Chicken Invaders: Chickens in submarines appear the underwater planet Epsilon Thalassus.
  • Raiden and Raiden Fighters series: Even though the player is relatively safe from "Sniper Tanks" over the ocean, they have to contend with their "Sniper Gunboat" aquatic counterparts.
  • Time Crisis 2: The first boss is accompanied by aquatic ninjas.

Survival Horror

  • Sir, You Are Being Hunted: Bog Creatures, one of the types of enemy robots, are swarming masses of mechanical tentacles that lurk in the water. They go after the player if you sit in the water for too long.

Third-Person Shooters

Tower Defense

  • Mini Robot Wars has the land-based stealth unit called the Mole. In the New Game Plus, it gets the ability to swim on the water surface! And then you get even worse news later — the Giant also gets the ability to travel amphibiously.
    "Ocean doesn't save you from Mole anymore; for it can swim now!"
  • Plants vs. Zombies:
    • The first game has Snorkel Zombies, Ducky Tube Zombies, and Dolphin Rider Zombies, which are fought in pool levels.
    • Plants vs. Zombies 2: It's About Time: Pretty much every Zombie from Big Wave Beach is this, starting out from the water and eventually making it to the shore (with the exception of the Fisherman who always stays on the water).

Turn-Based Strategy

  • Battle for Wesnoth: Some factions allow you to recruit merman or naga units, which gain increased defense and movement speed in water and swamp terrains.
  • Plants vs. Zombies: Heroes has teammates with the "Amphibious" trait. This allows them to be played on water lanes, which are inaccessible to teammates without the trait. Plant classes specializing in Amphibious teammates are Guardian and Smarty, and Zombie classes specializing in them are Beastly and Sneaky.
  • XCOM Terror From The Deep replaces the first game's aliens with a variety of aquatic aliens and altered Earth species; with the exception of the few surface-only units, all enemies are aquatic. Most of them are also able to fight on land.

Wide-Open Sandbox

  • Minecraft: There are a number of hostile aquatic mobs, all of which take extra damage from Tridents with the Impaling enchantment.
    • Guardians and their Elder Guardians are fishlike creatures only capable of moving or using their lasers underwater.
    • Drowned are aquatic versions of normal zombies. These spawn in water areas or transformed from a zombie that's submerged in water for a certain amount of time, and they're capable of swimming and staying underwater indefinitely. Furthermore, they can spawn with a Trident, which gives them a painful ranged attack. Strangely, despite being water-based mooks, they don't take extra damage from a Trident with the Impaling enchantment.

    Other examples 

Anime and Manga

Comic Books

  • Wonder Woman: During her Earth-Two days Diana fought the Neptunians whose steeds in battle that would fight all by themselves as well were giant flying fish with tentacles.


  • Animorphs: One story starts when the Yeerks bioengineer gills onto their Hork-Bajir troops. It fails horribly, and the poor guys end up choking on air.

Tabletop Games

  • Dungeons & Dragons:
    • Crystal oozes are an offshoot of gray ooze which live in lakes and seas, and which are translucent to make themselves more difficult to spot underwater.
    • Eyes of the deep are essentially beholders found underwater, minus several eyestalks and plus a pair of crablike pincers.
    • Kapoacinths are an amphibious gargoyle variant that can swim but cannot fly and which are only found in aquatic environments.
    • Lacedons are a type of aquatic ghouls who lurk around reefs and treacherous coats to prey on wrecked and stranded ships.
    • Scrags are amphibious trolls who only regenerate when immersed in water.
  • Pathfinder:
    • Blue worms are the water-dwelling variant of the cave worm family, adapted to living in underground waters instead of tunneling through solid stone.
    • Lacedons are aquatic ghouls who lurk near hidden reefs or other places where ships are likely to meet their ends ambushing it near shorelines.
    • Sarglagons, also called drowning devils, are Hell's go-to aquatic minions — if devils or their worshippers are involved and the adventure heads near or underwater, changes are very good that sarglagons will show up.
    • There are aquatic versions of sinspawn used for amphibious and naval combat, with gills and webbed feet and hands. The most common versions are wrathspawn, envyspawn and lustspawn, as all come from nations that had coastal borders.
    • Slithy jabberwocks swim instead of flying like regular jabberwocks do, and are created to wreak destruction beneath the waves.

Western Animation

  • Star Wars: The Clone Wars: The Republic army employs clone troopers outfitted with diving gear and flippers for underwater missions, while the Separatists use specialized aqua droids.


Video Example(s):

Alternative Title(s): Underwater Minion


Cheep Cheep

Cheep Cheeps are fish enemies that come out of the water.

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Main / AquaticMook

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