You can create a spreading "tsunami" effect using game mechanics without any downloads:
If you can’t install add‑ons, use commands to create a fake wave: tsunami mod minecraft bedrock work
: Large-scale water updates in Bedrock can cause significant game lag or crashes if the area is too large for the device's hardware. Griefing Rules : If using commands, you can toggle /gamerule tsunamiGriefing You can create a spreading "tsunami" effect using
I reached the lighthouse ladder as the water lapped at my heels. I climbed. One rung. Two. My screen shook—the mod’s “tremor effect” as the wave compressed the coastline. At the top, Kai grabbed my arm and pulled me onto the glass-floored observation deck. One rung
Then, the music stopped. Not the background music—that was still playing—but the ambient sound of the water changed. It wasn't a ripple anymore. It was a low, vibrating thrum, like the game engine was groaning under pressure.