We’re certainly not the only entity called "A Sea Change." It’s an evocative, enduring phrase, used variously by a brand-new grantmaking entity, an album by Beck, a search firm for ophthalmologists, a photo essay in Mother Jones, and a book about migration in Australia, to name just a few.
The phrase comes to us courtesy of Mr. Shakespeare, naturally, from Ariel’s song in The Tempest (1,ii,403).
The full text:
Full fathom five thy Father lies,
Of his bones are Corrall made:
Those are pearles that were his eies,
Nothing of him that doth fade,
But doth suffer a Sea-change
Into something rich & strange
Sea-Nymphs hourly ring his knell.
Harke now I heare them, ding-dong, bell.