This is another set of words I commonly confuse. Turns out, they are not only pronounced alike but they are, more or less, antonyms.
Emerge [ih-murj] (verb):
1. to come forth into view or notice.
2. to rise, as from difficulty.
3. to come into existence.
Little bubbles emerged on the surface of the water. “Someone’s down there,” he yelled, “and he’s breathing.”
Immerge [ih-murj] (verb):
1. to plunge, as into fluid.
2. to disappear by entering into a medium, as the moon into the shadow of the sun.
Having arrived at a dead end, Sergey caught his breath and immerged himself under the surface of the pond.