wade
They waded through the murky water.
Dabble
STANKY!
It could be paddling.
Paddle is the word. There are 2 definitions of paddle, so he careful not to get it mixed up.
Roomroaming?
to taxi
Immobile (though I don't quite understand what you mean by science word)
The word used to describe putting a boat or vessel in the water is "launch." This can refer to the process of moving a vessel from land into the water, typically using a ramp or a crane. Launching is an essential step in preparing a boat for use.
The word "feet" is a noun when referring to the body part, and also can be a verb in the sense of moving on foot.
Current means the present time, or a body of water moving in a definite direction.
Water is the solvent.
ebb