...nor anything even remotely close to THAT is Casual Nudity material... At all, man!
The spirit of that pool is one of wholesomeness or/and innocence; it's not only about "nothing explicitly sexual / suggestive going on, so it's OK 4 the pool, lol". NO, not at all.
Context isn't only important, but it might be THE most important thing when it comes to it. Pictures depicting clear implications of abuse, torture, (both psychological and psychological) rape, and anything similar, are "not kosher" when it comes to this pool.