The Birth of King Arthur

Merlin and the Child Arthur, Illustration by Gustave Doré

And then the two

Dropt to the cove, and watch'd the great sea fall,

Wave after wave, each mightier than the last,

Till last, a ninth one, gathering half of the deep

And full of voices, slowly rose and plunged

Roaring, and all the wave was in a flame;

And down the wave and in the flame was brone

A naked babe, and rode to Merlin's feet,

Who stoopt and caught the baby, and cried, 'The King!

Here is an heir for Uther!'

Alfred Tennyson, 'The Coming of Arthur[ (Idylls of the King)

That's certainly an interesting telling of the mythical king's birth!  But going by his description, doesn't it make one wonder who his real parents were then?  Cause this certainly doesn't sound like a traditional human birthing scene... Any suggestions?