The bulk update request #11412 is pending approval.

create alias beach_balls (4) -> beach_ball (3908)
create alias beachballs (0) -> beach_ball (3908)

Reason: The first alias prevents a common pluralization typo of the valid beach_ball tag: https://e621.net/post_versions?commit=Search&search%5Btags_added%5D=beach_balls

The second alias is purely preemptive, but included for completeness since the no-space singular beachball is already aliased away.