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Mythical beings capable of changing from seal to human form by shedding their skin. They are found in Faroese, Icelandic, Irish, and Scottish folklore. Selkies are said to live as seals in the sea but shed their skin to become human on land.

In Norse mythology, Jormungandr, also known as the Midgard Serpent, is a sea serpent so large that it encircles the world and grasps its own tail. It is foretold to release its tail during Ragnarok.

A mythological creature with the head of a goat and the tail of a fish. Known as the 'Sea Goat,' Capricorn has been recognized as a constellation and astrological sign.

A large mythical creature from Australian Aboriginal mythology, said to lurk in swamps, billabongs, creeks, riverbeds, and waterholes. The bunyip is often described as having a dog-like face, dark fur, a horse's tail, flippers, and walrus-like tusks or horns.

A primordial sea goddess from ancient Babylonian mythology, depicted as a chaos monster and the embodiment of the primordial ocean. She mates with Abzu to produce younger gods and later makes war upon them.

A shape-shifting water spirit from Scandinavian folklore, known to lure people into the water with either its beauty while in human form or with enchanting songs as a horse. It is known for its grim fascination with drowning.

In Greek mythology, Scylla is a monster that lives on one side of a narrow channel of water, opposite its counterpart Charybdis. Ships passing the channel had to choose between facing Scylla or Charybdis, an equally dangerous whirlpool.

A cosmic entity created by H.P. Lovecraft. It is depicted as a gigantic, octopus-headed, dragon-bodied, malevolent being slumbering in the city of R'lyeh underwater.

A legendary sea monster, resembling a giant turtle or whale with a semblance of land on its back. It's often mistaken for an island and lures mariners to land on its back before diving and drowning them.

In Jewish mythology, a primordial sea serpent. Symbolizes chaos and is mentioned in the Hebrew Bible. Often interpreted in later texts as a symbol of evil or challenge to be overcome.

A creature from Japanese folklore, the Ningyo is a fish-like creature with a human head and is associated with misfortune or good luck. Consuming the flesh of a Ningyo is said to grant remarkable longevity.

Mami Wata are water spirits in African, African-American, Caribbean, and other African-influenced cultures. They are often described as having the body of a human and the tail of a fish or serpent and are associated with wealth, beauty, and the divine.

In Slavic folklore, the Vodyanoy is a male water spirit associated with bodies of water like rivers, ponds, and wells. He is said to cause drownings and to be hostile toward humans, particularly those who disrespect his waters.

A legendary sea monster of gigantic size, believed to dwell off the coasts of Norway and Greenland. Often depicted in literature and folklore as a fearsome creature capable of dragging ships into the depths.

A mythological creature with a female human head and torso and the tail of a fish. Mermaids are associated with perilous events such as floods, storms, shipwrecks, and drownings. In some cultures, they can be benevolent or beneficent, bestowing boons or falling in love with humans.

A serpent-like water monster from Greek mythology with many heads. For every head cut off, it would regrow two new heads. The Hydra of Lerna was slain by Hercules as one of his Twelve Labours.

In Greek mythology, sirens are creatures with the head of a female and the body of a bird. They lured sailors with their enchanting music and voices to shipwreck on the rocky coast of their island.

Another monster from Greek mythology, Charybdis is often described as a whirlpool rather than an anthropomorphic entity, located opposite the sea monster Scylla.

A mythological creature shared by Phoenician and Greek mythology, depicted as a horse with the tail of a fish. Often seen pulling Poseidon's chariot across the seas.