Surface Creatures
Given the whole premise of the surface of the water being just a generally advantageous position, I feel as though it would be best to make surface moves have something to do with evasion and ferocity. Evasion because the reflective surface of the water makes it more difficult to see the things beneath, and ferocity because you get a boost if things cannot see you.
Most things in a “surface class” would be combinations of cunning and fierce, so there would be lots of evasion, high speed, high damage and ferocity to be found. Stuff like this, maybe:
Cave Creatures
Ocean caves are known for being large, spacious places. They tend to be deeper in the sea, and are made of stone and other such materials. Because of this, I feel Cave creatures would focus on shields and distraction. Shields, because the caves are made of rock, which is a rather hard substance, and distraction because it’s rather difficult to see.
Most things in the Cave class would be a combination of resilients and cunnings. So some armor, shields, distraction, maybe the occasional dodge or two.
** Reef Creatures**
Reefs are known for windy pathways, sharp pieces of coral and being home to lots of forms of life. Ideally, the main focuses would be deceleration and speed increases. Deceleration because most creatures wouldn’t be able to navigate well, and speed increases because the creatures adapted for the areas would have an easy time navigating.
That said, I did mention that reefs are a home to many many forms of life. So, I feel as though all the other miscellaneous stuff would be shoved in here. Attributes like healing, cleanse, nullification and really just anything and everything. Even in JWtG, creatures like Kronosaurus are part of reefs, and they’d likely bring attributes like defense shattering. Creatures like Archelon would bring massive amounts of armor.
So, to recap. The Reef section would contain a lot of Wild Cards, but if we’re sticking to purely boundary lines, it would probably focus more on resilient fierce creatures (given what class combinations the other two sections specialize in). So these were a few of my ideas: