At least for the Gryphon saws:
1. Water cooling for the blade and to catch most of the water dripping off the coral.
2. The table and body is plastic, so they won't rust. The few metal components including the blade are stainless for the same reason. Water is hard on most machine tools, doubly so for salt water.
3. Diamond blade with a relatively low speed, which also means it has no teeth. While I don't like to do so regularly, I occasionally bump my skin into the blade on my Gryphon and nothing bad happens. The same is not true of toothed blades on bandsaws. As an added bonus, the way they are set up the blade tends to simply jump off of the drive wheel rather than jamming or trashing the blade. I've had a few bad scroll saw experiences when parts stick to the blade. This isn't an issue in a down pull only blade.
I suspect the Inlands are much the same way, but I haven't used one first hand so I'm not sure about their materials and water containment other than that they have a drip.