Aquaman: 8 New Details DC Just Revealed
3. Unite The Seven
The first marketing for Aquaman, which came in the build-up to Batman v Superman, featured the character with the tagline Unite The Seven, which was taken at the time as a reference to the Justice League team itself, only for it to fall short of reaching that number (the tagline later changed to Unite The League instead).
While that might've been because plans concerning Green Lantern changed, there is another seven at play here, with the EW confirming the movie features "seven different underwater kingdoms".
Whether Snyder was really laying the groundwork for the Aquaman movie or not, the movie does now have a chance to rework the tagline, with Aquaman uniting the seven underwater kingdoms. The report also includes a few other things we'll be seeing in the underwater world, which include "Atlanteans riding great white sharks, giant octopi ... trench-dwelling cannibals, and even sea dragons."