This is a "Matroska" video container. It is popular because it can hold multiple audio tracks (different languages) and subtitle tracks in a single file.
However, Aquaman was not the only one searching for the Eternal Depths. A powerful new villain, Black Manta, had also set his sights on the lost kingdom, seeking to exploit its power for his own gain. The two enemies clashed in epic battles, with Aquaman determined to protect the secrets of the Eternal Depths and prevent Black Manta from misusing its power.
Most critics agree it lacks the fresh wonder and "audacity" of the 2018 original.
, Arthur must forge an uneasy alliance with his imprisoned half-brother,
