What does "emerge" mean?

Emerge: To rise out of a fluid; to come forth from that in which anything has been plunged, enveloped, or concealed; to issue and appear; as, to emerge from the water or the ocean; the sun emerges from behind the moon in an eclipse; to emerge from poverty or obscurity. "Thetis . . . emerging from the deep." Dryden. Those who have emerged from very low, some from the lowest, classes of society. Burke.