Emerge, meaning "to come forth," "to rise up," and "to come into sight," is followed by the preposition from: "Martha emerged from the pool with her hair dripping." "The sun emerged from behind fleecy clouds." Emerse no longer appears in the language except in an adjectival (past-participle) form used in botany: A water lily standing out of water and surrounding leaves is said to be emersed. Immerge means "to plunge into" and "to disappear." In the former meaning it is synonymous with immerse: "The chemist immergea (or immersed) the solution in acid." The other meaning of immerge is illustrated in a statement such as "The faint moon immergea into the shadow of the sun."
Dictionary of problem words and expressions. Harry Shaw. 1975.