Deities associated with fish, water, and the sea

Deity	Culture/Mythology	Description
Dagon	Mesopotamian	God of fertility and fish, depicted as part man and part fish.
Atargatis	Syrian	Goddess of the sea and fertility, often represented as a mermaid.
Matsya	Hindu	Avatar of Vishnu, depicted as a fish, associated with a great flood.
Poseidon	Greek	God of the sea, earthquakes, and horses, associated with all sea creatures.
Njord	Norse	God of the sea, fishing, and seafaring, linked to prosperity from the sea.
Sedna	Inuit	Goddess of the sea and marine animals, central to Inuit mythology.
Vellamo	Finnish	Goddess of the sea, lakes, and storms, associated with fish and marine life.
Ryujin	Japanese	Dragon god and ruler of the sea, associated with sea creatures.
Tangaroa	Maori/Polynesian	God of the sea and fishing, revered in many Polynesian cultures.
Yemaya	Yoruba	Goddess of the sea and rivers, often depicted as a mermaid.
Aegir	Norse	God of the sea, known for hosting feasts for the gods, associated with sailors.
Amphitrite	Greek	Sea goddess and wife of Poseidon.
Lir	Celtic/Irish	God of the sea, associated with the waves and marine life.
Manannan	Celtic/Irish	Sea god and ruler of the Otherworld, associated with magic and navigation.
Varuna	Hindu	God of the oceans and the celestial waters, guardian of moral law.
Neptune	Roman	God of the sea, equivalent to the Greek Poseidon.
Suijin	Japanese	Shinto god of water, associated with agriculture and fishing.
Oannes	Babylonian	Fish-like deity who brought civilization and wisdom to humans.
Jengu	Sawa (Cameroon)	Water spirit believed to bring good fortune and cure diseases.
Namaka	Hawaiian	Goddess of the sea and ocean, sister of Pele.
Glaucus	Greek	Sea god and protector of sailors and fishermen.
Chalchiuhtlicue	Aztec	Goddess of rivers, lakes, and seas, associated with fertility and childbirth.
Nammu	Sumerian	Primordial goddess of the sea, mother of the gods and the world.
Mazu	Chinese	Goddess of the sea, protector of sailors and fishermen.
Nun	Egyptian	Personification of the primordial waters of chaos in Egyptian mythology.
Rán	Norse	Goddess of the sea, associated with storms and drowning.
Tethys	Greek	Titaness and goddess of the nourishing flow of the sea.
Sirona	Celtic	Goddess of healing springs and rivers.
Melusine	European folklore	Water spirit often depicted as a two-tailed mermaid.
Phorcys	Greek	Sea god, son of Pontus and Gaia, father of many sea monsters.

Atlantis relation

Poseidon (Greek): Poseidon is the god of the sea, earthquakes, and horses. According to Plato, Poseidon was the divine patron of Atlantis and the father of its first kings. His association with the sea and his role as the protector of Atlantis make him a central figure in the myth.

Amphitrite (Greek): As the wife of Poseidon, Amphitrite is the sea goddess who is often depicted alongside him. Her connection to the sea and her role as a divine consort reinforce the oceanic themes of Atlantis.

Neptune (Roman): The Roman equivalent of Poseidon, Neptune is also associated with the sea and oceanic domains. His connection to the sea aligns with the themes of Atlantis.

Triton (Greek): Triton, the son of Poseidon and Amphitrite, is a sea god often depicted with a human upper body and the tail of a fish. He is associated with the sea and sometimes considered a messenger of Poseidon, highlighting the oceanic elements of Atlantis.

Atlas (Greek): Although not a fish god, Atlas is associated with Atlantis as its namesake. According to Plato, the first king of Atlantis was Atlas, the son of Poseidon, and the island was named after him. Atlas is also known as the titan who holds up the heavens, symbolizing strength and endurance.

Oannes (Babylonian): A fish-like deity who emerged from the sea to impart wisdom and knowledge to humanity. Oannes is associated with advanced knowledge and civilization, which parallels the advanced culture of Atlantis.

Glaucus (Greek): A sea god known for his prophetic abilities and connection to the sea. His association with prophecy and transformation could relate to the mystical and advanced nature of Atlantis.

While these deities have associations with the sea and advanced knowledge, it’s important to note that the story of Atlantis is a mythological construct created by Plato and not directly tied to any specific historical or mythological traditions outside of his writings. However, these connections help illustrate the themes and imagery that are often associated with Atlantis in various interpretations and adaptations.