I saw the whale shark descend rapidly to the depths.

Solar balloons can descend rapidly when cooling occurs, making ballast very important.

In some instances, these pockets of colder air can descend rapidly, creating a dry microburst which can be extremely hazardous to aviation.

Once back in my seat, what has been a slow evening descends rapidly into a very fast one.

This supernatural melodrama posits a few real questions about the morality of defending the indefensible, but descends rapidly into silliness.