Flashpoint Aquaman DCAU style

Aquaman had fallen in love with Princess Diana and was ready to marry her when Diana's mother was killed on their wedding day. He later married Mera instead and after her death by the hands of the Amazons, he along with his Atlanteans wage war against the Amazons and have caused havoc in Western Europe. His sulbaltern Vulko designed a device that when attached to the King of Markovia, Brion Markov, it amplifys Brion's powers of manipulation of the Earth's gravitational field. It was through this device that Aquaman managed to cause Western Europe to sink into the sea.