On the Odym map from DC War of Light, there is water terrain that changes elevation, a wouldn't be able to go from elevation to elevation without improved movement ignores elevation, correct?

That is correct. Swimming up a waterfall is tricky.

tricky indeed, thanks

Does that mean salmon have super powers?

I said "tricky", not "impossible".

This guy can splash around in said waterfall from below, but for a different reason.

Because he has .

Don't do the mistake I made and think he has and try to move him with the Flashpoint Aquaman.

Namors must have a habit of confusing people with their speed types.

I remember having arguments with people every time I would Carry SI Namor. He had and a power or trait which gives him Flight. People who use shorthand to remember rules (always a bad habit) would say "Flyers can't be carried."

They were wrong.

DEAD WRONG!

When the phoenix came out I had the opposite problem of people trying to use Foot symbol characters with a fragment as carriers because "flyers can carry"

Well, the could, but the passenger would have to have been tiny.

I was just trying to point out his "Place me in that square of water over there" thing.

And I've had that argument with folks over that particular Namor, too.