How did the Talokan deal with the Snap?

The Talokan have been around for centuries. This much is made clear in the film. What isn’t make clear in the film is how they receive information about the rest of the world (there’s no underwater wifi as far as we can tell). So how did they make sense or react when half of their people just disappeared for five years? Maybe we’ll find out, maybe we won’t, but it’s fun to think about.