I believe i'm about to learn something new here heh. btw, are those in like strings? or totally independent from one another.
i think there are some weird jellyfish familycritters that get pretty sci-fi looking, but they do their thing in strings.
i had a purple whip gorg spawn and it put out some pretty decent sized white spheres. maybe something spawned like a Pocillapora or w/e
that's all i got....