Enki and later Ea were apparently depicted, sometimes, as a man covered with the skin of a fish, and this representation, as likewise the name of his temple E-apsu, "house of the watery deep", points decidedly to his original character as a god of the waters (see Oannes).
Around the excavation of the 18 shrines found on the spot, thousands of carp bones were found, consumed possibly in feasts to the god.
Of his cult at Eridu, which goes back to the oldest period of Mesopotamian history, nothing definite is known except that his temple was also associated with Ninhursag's temple which was called Esaggila, "the lofty head house" (E, house, sag, head, ila, high; or Akkadian goddess = Ila), a name shared with Marduk's temple in Babylon, pointing to a staged tower or ziggurat (as with the temple of Enlil at Nippur, which was known as E-kur (kur, hill)), and that incantations, involving ceremonial rites in which water as a sacred element played a prominent part, formed a feature of his worship.
This seems also implicated in the epic of the hieros gamos or sacred marriage of Enki and Ninhursag (above), which seems an etiological myth of the fertilisation of the dry ground by the coming of irrigation water (from Sumerian a, ab, water or semen).
The early inscriptions of Urukagina in fact go so far as to suggest that the divine pair, Enki and Ninki, were the progenitors of seven pairs of gods, including Enki as god of Eridu, Enlil of Nippur, and Su'en (or Sin) of Ur, and were themselves the children of An (sky, heaven) and Ki (earth).
The pool of the Abzu at the front of his temple was adopted also at the temple to Nanna (Akkadian Sin) the Moon, at Ur, and spread from there throughout the Middle East.
It is believed to remain today as the sacred pool at Mosques, or as the holy water font in Catholic or Eastern Orthodox churches.

Whether Eridu at one time also played an important political role in Sumerian affairs is not certain, though not improbable.
At all events the prominence of "Ea" led, as in the case of Nippur, to the survival of Eridu as a sacred city, long after it had ceased to have any significance as a political center.
Myths in which Ea figures prominently have been found in Assurbanipal's library, and in the Hattusas archive in Hittite Anatolia.
As Ea, Enki had a wide influence outside of Sumer, being equated with El (at Ugarit) and possibly Yah (at Ebla) in the Canaanite 'ilhm pantheon.
He is also found in Hurrian and Hittite mythology as a god of contracts, and is particularly favourable to humankind.
It has been suggested that etymologically the name Ea comes from the term *hyy (life), referring to Enki's waters as life-giving.
Enki/Ea is essentially a god of civilization, wisdom, and culture.
He was also the creator and protector of man, and of the world in general.
Traces of this version of Ea appear in the Marduk epic celebrating the achievements of this god and the close connection between the Ea cult at Eridu and that of Marduk.
The correlation between the two rises from two other important connections: (1) that the name of Marduk's sanctuary at Babylon bears the same name, Esaggila, as that of a temple in Eridu, and (2) that Marduk is generally termed the son of Ea, who derives his powers from the voluntary abdication of the father in favour of his son.
Accordingly, the incantations originally composed for the Ea cult were re-edited by the priests of Babylon and adapted to the worship of Marduk, and, similarly, the hymns to Marduk betray traces of the transfer to Marduk of attributes which originally belonged to Ea.

It is, however, as the third figure in the triad (the two other members of which were Anu and Enlil) that Ea acquires his permanent place in the pantheon.
To him was assigned the control of the watery element, and in this capacity he becomes the shar apsi; i.e. king of the Apsu or "the abyss".
The Apsu was figured as the abyss of water beneath the earth, and since the gathering place of the dead, known as Aralu, was situated near the confines of the Apsu, he was also designated as En-Ki; i.e. "l
Enki and later Ea were apparently depicted, sometimes, as a man covered with the skin of a fish, and this representation, as likewise the name of his temple E-apsu, "house of the watery deep", points decidedly to his original character as a god of the waters (see Oannes). Around the excavation of the 18 shrines found on the spot, thousands of carp bones were found, consumed possibly in feasts to the god. Of his cult at Eridu, which goes back to the oldest period of Mesopotamian history, nothing definite is known except that his temple was also associated with Ninhursag's temple which was called Esaggila, "the lofty head house" (E, house, sag, head, ila, high; or Akkadian goddess = Ila), a name shared with Marduk's temple in Babylon, pointing to a staged tower or ziggurat (as with the temple of Enlil at Nippur, which was known as E-kur (kur, hill)), and that incantations, involving ceremonial rites in which water as a sacred element played a prominent part, formed a feature of his worship. This seems also implicated in the epic of the hieros gamos or sacred marriage of Enki and Ninhursag (above), which seems an etiological myth of the fertilisation of the dry ground by the coming of irrigation water (from Sumerian a, ab, water or semen). The early inscriptions of Urukagina in fact go so far as to suggest that the divine pair, Enki and Ninki, were the progenitors of seven pairs of gods, including Enki as god of Eridu, Enlil of Nippur, and Su'en (or Sin) of Ur, and were themselves the children of An (sky, heaven) and Ki (earth). The pool of the Abzu at the front of his temple was adopted also at the temple to Nanna (Akkadian Sin) the Moon, at Ur, and spread from there throughout the Middle East. It is believed to remain today as the sacred pool at Mosques, or as the holy water font in Catholic or Eastern Orthodox churches.
Whether Eridu at one time also played an important political role in Sumerian affairs is not certain, though not improbable. At all events the prominence of "Ea" led, as in the case of Nippur, to the survival of Eridu as a sacred city, long after it had ceased to have any significance as a political center. Myths in which Ea figures prominently have been found in Assurbanipal's library, and in the Hattusas archive in Hittite Anatolia. As Ea, Enki had a wide influence outside of Sumer, being equated with El (at Ugarit) and possibly Yah (at Ebla) in the Canaanite 'ilhm pantheon. He is also found in Hurrian and Hittite mythology as a god of contracts, and is particularly favourable to humankind. It has been suggested that etymologically the name Ea comes from the term *hyy (life), referring to Enki's waters as life-giving. Enki/Ea is essentially a god of civilization, wisdom, and culture. He was also the creator and protector of man, and of the world in general. Traces of this version of Ea appear in the Marduk epic celebrating the achievements of this god and the close connection between the Ea cult at Eridu and that of Marduk. The correlation between the two rises from two other important connections: (1) that the name of Marduk's sanctuary at Babylon bears the same name, Esaggila, as that of a temple in Eridu, and (2) that Marduk is generally termed the son of Ea, who derives his powers from the voluntary abdication of the father in favour of his son. Accordingly, the incantations originally composed for the Ea cult were re-edited by the priests of Babylon and adapted to the worship of Marduk, and, similarly, the hymns to Marduk betray traces of the transfer to Marduk of attributes which originally belonged to Ea.
It is, however, as the third figure in the triad (the two other members of which were Anu and Enlil) that Ea acquires his permanent place in the pantheon. To him was assigned the control of the watery element, and in this capacity he becomes the shar apsi; i.e. king of the Apsu or "the abyss". The Apsu was figured as the abyss of water beneath the earth, and since the gathering place of the dead, known as Aralu, was situated near the confines of the Apsu, he was also designated as En-Ki; i.e. "l
Enki