Aquatic-Fresh Monsters
in Basic Fantasy Field Guide Omnibus
30 monsters
- Axolotl, Giant - A paedomorphic salamander that matures without undergoing metamorphosis into the terrestrial adult form
- Bagobone, Aquatic - Creature made from seal skin with a great white shark head and polar bear claws
- Beaver, Giant - Huge versions of the ordinary aquatic mammal, often found in "lost world" areas
- Beetle, Giant Water - Round-bodied beetles found in deep fresh water, attracted by vibrations or noise
- Bunyip - Large carnivorous lake-dwelling creature with dog-like face, large tusks, sturdy webbed feet, short otter-like fur, and bear-like body
- Chuhl - Horrid 8-foot long abomination that looks like a cross between a serpent, a crab, and an insect
- Cragodile - A crocodile with heavy stony hide that hunts waterway shallows
- Eel, Electric - Knifefish that can emit powerful electrical bursts in water
- Eel, Giant - Huge aquatic beasts often found in underwater ruins or as trained guardians
- Fish, Giant Gar - Voracious freshwater predators found in deep water
- Fish, Giant Pike - Large freshwater predators found in still waters
- Giant Crayfish - Large freshwater crustacean similar to a lobster that ambushes prey from underwater
- Kappa - Green-blue scaled creatures that live near bodies of water
- Kelpie - A malevolent, shape-shifting freshwater fey that haunts lakes, rivers, and ponds
- Lake Skeleton - Dangerous undead formed from drowned corpses, with bloated lung remains
- Lamprey - An eel-like jawless fish with a funnel-shaped sucking mouth lined with many sharp teeth
- Mink - Alert semi-aquatic carnivorous mammal of the mustelidae family with highly prized fur
- Naga, Aquatic - Snake-bodied creatures with human heads, colored blue through turquoise to emerald green
- Naiad - A female water spirit that lives in freshwater lakes and ponds
- Nymph - A feminine fey creature native to water, appearing as a young and very beautiful woman with faintly greenish skin
- Otter - Small or medium-sized semi-aquatic mammal with a long body
- Sea Ghoul - Aquatic undead that scavenge shipwrecks and drownings, ambushing swimmers with paralysis and poisonous aura
- Skum - Horrific humanoid creatures transformed by aboleths as their servants
- Snake, Uktena - A great horned water serpent as big around as a tree trunk with a bright blazing crest
- Spider, Giant Diving Bell - A pony-sized spider that carries air underwater and crafts air-filled lairs
- Spider, Giant Water - Semi-intelligent creatures that make underwater lairs and breathe air
- Swanmay - A rare and graceful type of fey shapeshifter that transforms between humanoid and swan forms
- Water Weird - A strange kind of wild water elemental which hates living creatures, seeking to drown them
- Wayai Otter - A giant, extremely muscular otter the size of a dwarf with massive biceps
- Whippersnapper - Amphibious predators that look like a cross between an eel and a frog