Oceania is an undersea nation of tritons and shapeshifting mermen. Oceania ceases to exist as a nation after the onslaught of the Atlanteans enslaved by R'lyeh.
Triton Kings (Early Age)
The Early Age of Oceania is still under control of the Triton Kings.
Coming of the Capricorns (Middle Age)
After the fall of the Triton Kings, Oceania adapts in order to expand into the land. Shapeshifters and hybrids such as the Ichtycentaur abound.