Natural bidet

If you time it right enough it'll put the turd right back where it came from

You haven't truly shit until you've had your ass cleaned by Poseidon

Good old ocean spray

There are pit toilets up in the Rocky Mountains at parks that have a vent pipe up above them.

Well, when the wind is blowing around 9,000+ft above sea level, (which is frequent) you get a blast of cold mountain air up your rump, like a York Peppermint Patty of freshness. It is quite an indescribable experience.

At some point on the sliding scale of bidet force, they become enemas.

In Seattle in the late 1800s this kind of thing literally happened sometimes when the tide came in. They called it a "sewer geyser".

More like natural enema

Natural colonic more like

Is this Ireland?

If they empty straight into the sea then why even build the outhouse? They could just have people go on the rocks