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All Habitats

Ocean Cryptids

15 creatures found in ocean habitats.

Megalodon

Megalodon

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

Debunked/disputedOceania / North America / South America / Africa
Kraken

Kraken

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

Debunked/disputedEurope
Nuckelavee

Nuckelavee

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

Folklore onlyEurope
Each-Uisge

Each-Uisge

This shape-shifting water horse of Scottish lochs lures riders onto its back, then drags them to a watery death.

Folklore onlyEurope
Gloucester Sea Serpent

Gloucester Sea Serpent

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

Repeated sightingsNorth America
Ningen

Ningen

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

Eyewitness reportsOceania
Akkorokamui

Akkorokamui

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

Eyewitness reportsAsia
Morgawr

Morgawr

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

Photo/video claimsEurope
Cadborosaurus

Cadborosaurus

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

Physical evidence claimsNorth America
Steller's Sea Cow

Steller's Sea Cow

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

Eyewitness reportsAsia / North America
Taniwha

Taniwha

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

Folklore onlyOceania
Trunko

Trunko

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

Photo/video claimsAfrica
Globster

Globster

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

Physical evidence claimsOceania / North America / South America / Europe / Asia / Africa
Con Rit

Con Rit

A segmented, armored sea creature with dozens of lateral fins, washed ashore in Vietnam in 1883.

Physical evidence claimsAsia
Ri

Ri

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

Eyewitness reportsOceania

Many plants found in ocean environments are just as remarkable as the creatures. What's Bloomin' catalogs flowering plants by habitat, including species that thrive near water.

Other Habitats