I'm not massively impressed with the water. Cluckos's post here may have lots of fancy shading techniques, but it's a flat plane Nate's penetrating. There's zero sense of a watery surface; looks more like he's standing in low level fog. There's also a lack of decent bubbles and bubble shading while swimming. Bubbles should be wobble spheroids with a reflective environment map, and there should be lots of them...Was waiting for this, thank you.
I'm almost too hyped for UC4.. we need more people downplaying aspects or the graphics.
Instead we have what look like a kid's bubble-mixture sprite graphic sporadically placed. Lots of perfectly round, light rings. https://giant.gfycat.com/IdenticalCircularAssassinbug.gif