Chinese ballistic missile submarine Type-095 was scheduled to be deployed in 2010. It carries 12 JL-2 missiles with an 8000km range. 3-4 MRVS each. The Type-095 is supposed to be very, very quiet. And since we don’t want to disturb the whales. Maybe the ears were off.
The second stage of a JL-2 Missile is liquid fuelled and at operational altitudes would leave a very diffused exhaust plume. It would cover half of the horizon and look like an airborne jellyfish. Nope, try again.