The sea here was very deep. After diving thousands of fathoms below, the surroundings were already enveloped in darkness. Apart from the background noise, there was no other sound in the ocean; even the roaring above the sea had been completely overshadowed by the sound of the waves.
The darkness and dead silence felt like a bloodthirsty maw below, waiting to devour everything above.
When they dove below ten thousand fathoms, the surface of the deep blue bubble enveloping them started to display layers of ripples. The bubble quivered, rotated, and diminished the overwhelming pressure.
"Not there yet?"
"Not so fast, the Demon God Tomb is at least ten thousand fathoms below the seabed. At this depth, it can deter the vast majority of cultivators."
An accident here could mean instant death by crushing pressure.