It climbs onto a section of living coral colony using the large number of tube feet on its oral surface and flexible body.

A typical coral colony form several thousand larvae per year to overcome the odds against formation of a new colony.

Sure enough, the coral colonies start spawning around 8:20 p.m.

But only a couple of young coral colonies release sacs.

The band, which can range from a few millimeters to 10 centimeters wide, typically works its way from the base of the coral colony up to the coral branch tips.