Aquatic Cryptids

The legendary lake serpent of Scotland, photographed, sonar-scanned, and never found.

The largest shark that ever lived went extinct 3.6 million years ago, unless the deep ocean is hiding something.

The ship-swallowing sea beast of Norse legend, now partially explained by giant squid.

A skinless horse-rider hybrid rises from the ocean around Orkney, and its breath alone can wilt crops and sicken entire islands.

Australia's lurking water spirit, feared by indigenous peoples for thousands of years.

Canada's answer to Nessie, coiling through the depths of Okanagan Lake.

America's own lake monster, surfacing in the waters between Vermont and New York.

Something enormous has been surfacing in an Argentine lake for over a century.

A ghostly white humanoid shape rising from Antarctic waters, seen by Japanese fishermen.

Hundreds of witnesses watched a giant serpent patrol Gloucester Harbor for weeks in 1817.

Sweden's most famous lake monster has been reported for centuries and was officially designated a protected species in 1986.

Scotland's other lake monster lurks in the deepest freshwater loch in the British Isles, far from the tourist cameras of Loch Ness.

A serpentine lake dweller hiding in the frigid depths of Lake Tahoe since Washoe legend.

A humped sea serpent has been spotted off the coast of Cornwall since the 1900s, sometimes close enough to shore that beachgoers scatter.

A colossal red octopus lurking in Funka Bay, revered by the Ainu as both healer and destroyer.

A horse-headed sea serpent weaving through the waters of the Pacific Northwest.

Norway's lake monster has been sighted over 500 times in a small mountain lake, making it one of the most reported freshwater cryptids in Europe.

Sacred water guardians of Maori tradition that shape rivers, protect tribes, and sometimes drag the unwary to their doom.

Hunted to extinction just 27 years after Western science discovered it, some believe pockets of this gentle giant survive in remote Arctic waters.

Georgia's river serpent, a long-necked mystery lurking in the murky Altamaha.

A bloated, frog-faced old man lurks at the bottom of Slavic rivers, drowning the careless and keeping their souls in teapots.

The largest Great Lake may harbor the largest Great Lake monster, a creature linked to Ojibwe legends of the underwater panther.

A massive white carcass with an elephant-like trunk that washed ashore in South Africa.

An enormous gray creature that churned the White River and earned state legal protection.

A serpentine terror of Bear Lake, first reported by Mormon settlers and Shoshone alike.

The Amazon's pink river dolphin comes ashore at night disguised as a handsome stranger.

Russia's lake monster reportedly swallowed a Mongol war party's horses whole and has been spotted by modern fishermen with sonar equipment.

Lake Manitoba's serpentine lake monster has been reported by Indigenous communities for centuries and photographed at least twice.

Japan's answer to Nessie lives in a volcanic crater lake on the southern tip of Kyushu.

Massive, fleshy, unidentifiable masses that wash ashore worldwide, defying easy explanation until the lab results come in.

Nine bodies pulled from a South African river in 1997 were all missing their faces and brains.

A lake monster lurks in the cross-border waters of Lake Memphremagog, spotted from both the Quebec and Vermont shores.

Something massive moves beneath Alaska's largest lake, and the locals know to stay clear.

A plesiosaur-shaped creature in the murky tidal waters north of Sydney, reported by fishermen for over a century.

A whale-shaped mountain predator that slides down Colorado slopes to swallow hikers whole.

A colossal water creature in Australia's Murray River that punishes anyone who disturbs its territory with a wasting sickness.

A 40-foot beast in a shallow Nebraska lake, where something that size should have nowhere to hide.

It lies flat on the water like a discarded cowhide, until something steps on it.

A saber-toothed, armored aquatic predator was reported in a Kenyan river by a big-game hunter in 1907.

A small, otter-like animal in New Zealand's South Island rivers, where no native mammal should exist.

A marine humanoid reported by fishermen in New Ireland, with a woman's upper body and a fish-like lower half.

In Zambian lakes, a massive horned beast surfaces with enough force to capsize fishing boats.