I expected to be able to play through an ocean monument
on survival mode.

I went to fight a guardian swimming above the monument, and
I got a crash report RIGHT when hearing some king od sound.
I repeated this 3 times and crashed 3 times, so I gave up on
visiting the monument.

Steps to Reproduce:
0. Switch to Normal before starting
1. Find a ocean Monument
2. I used the seed: -6141597149942842866 You spawn in RIGHT next to
the monument
3. Swim to the Ocean Monument and attempt to fight the
Guardians swimming just above the monument.
(I had diamond armor on and a diamond sword)
4. Keep fighting (I fought for 7 seconds) until a sound occurs
(The sound may have been from the Guardians)
This will trigger your Minecraft to crash