Sea Swine: The Sea Swine, also known as Porcus Marinus, is a mythological sea creature with a hog-like head, prominent tusks, and a distinctive single eye at its navel.

Sea Swine - Represents the conflation of real marine observations with myth, highlighting historical misidentifications in natural history.

Sea Swine

Sea Swine - Represents the conflation of real marine observations with myth, highlighting historical misidentifications in natural history.

The Sea Swine, also known as Porcus Marinus, is a mythological sea creature with a hog-like head, prominent tusks, and a distinctive single eye at its navel. It has been variously interpreted as a porpoise and as a fantastical beast with four dragon's feet. Its hybrid features and maritime habitat have made it a subject of enduring debate among scholars and naturalists.

Origins & First Encounters

Source Texts & Tale Variants

Form & Powers

Regional Faces

Cultural Parallels

Legacy & Modern Evolution

Interesting Fact

The Sea Swine remains one of history's most debated cryptids, showcasing how misinterpretations of nature can give rise to enduring myths.

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Quick Creature Info

Associations:

Element: Water

Our Mythic Legendary Rating:

Mythic Ember
Mythic Ember rating

Also Sometimes Known As:

Porcus MarinusSea Hog

Habitat:

OceansOceanWaters south of IcelandReferenced in ancient texts and depicted in medieval maps such as the Carta marinaMarineSouth of Iceland and ancient maritime regions

Supernatural Powers:

Enhanced aquatic adaptation

Physical Attributes:

Single eye at the navelFour dragon's feetHog-like headTuskedToothedPossibly porpoise-like body shape

Abilities:

Pack hunting behaviorRobust physical buildUnique anatomical features

Behavior:

Lives in large packs

Lore:

Mythological sea creature/monsterAncient Greek and later European maritime loreRepresents the conflation of real marine observations with myth, highlighting historical misidentifications in natural history

Related Creatures, Tales or Lore

  • P
    Porpoise (as referenced by John Ray)
  • W
    Wild Boar (noted for hog-like features)
  • D
    Dragon (evoked by its four dragon’s feet)

References

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Curated by the Mythological Creatures Team

Series editor: Mythological Creatures Directory

Primary desk: Hellenic & Ancient Mediterranean Desk

(rev. November 2025)