Poseidon

Po-seidon (Ruler or Power of Sidon) is a pan-Mediterranean sea god, from East to West. 


Here is the link to the sea deity page:     http://www.theoi.com/greek-mythology/sea-gods.html

Poseidon is not merely emotion, he is a source of life giving fresh water, fertilizer of the Earth (Medusa, Demeter,
Athene, Aphrodite, etc.), the Earthshaker who brings earthquakes, etc., the god of storms (his horse son Pihassos/Pegasus
carries lightning for Zeus, too), tsunamis, hurricanes, and drought; the giver of good fishing, seaweeds, and trading 'luck', bounty,
abundance; wine, oils, pearls, coral, shells, sea amber, ambergris, purple & rose dyes from the sea snails of Phoenicia;
the god of sailors, shipping, harbors, horses, horsemen, and horse culture,  a god of action and adventure.

Poseidon is a god of political power, chiefs, admirals, and kings.   Armies with cavalry and navies were counted among
his followers.  He is the god of the sea and the earth, a god of action and passion, one who demands respect and
remembrance, as his punishment of Odysseus showed us.  Poseidon also allied himself with Hera against Zeus, in both
the rebellion of Olympos (by binding Zeus) and with the Greeks in the Trojan War.

Poseidon energy is forthright and open about needs, wants, desires, and necessity.  Poseidon can be courteous or brutal.
The mysterious part of planet Neptune in astrology draws upon the mythic powers or energies of shape-shifter water gods, like Thetis, Proteus and Nereus (acting, deception, conflict, struggle, and 'distorting' or 'shaping' the truth); while the emotion, passion, storminess, sailors, ships, fish and sea-related things, and horsiness are Poseidon.

Planet Neptune's assignment of 'dreams & visions' also includes the mythic/mystic aspects of Hypnos and Somnolos,
healing of Asklepios (via dream incubation), the music and hypnotic sway of Orpheus, dancing of the Muses, while the
intoxicating energy of planet Neptune is Dionysian.  Neptune is quite a collective of deity energies!