It’s difficult to see (the pics are a bit blurry for ID), but for the green tubes, maybe a Neomeris sp. (macroalgae), and for the purple palm fronds, possibly something like clove polyps or xenia (corals) or a red macroalgae?
Again, I can’t tell for sure. Hopefully someone will have some more solid ID’s for you.
Pics are not clear enough, but perhaps colonial hydroids? When in higher light they take on a fluorescent green look and lower down more brownish (dark purplish under blue light).